73401552 has 280 divisors, whose sum is σ = 260221440. Its totient is φ = 19595520.

The previous prime is 73401547. The next prime is 73401557. The reversal of 73401552 is 25510437.

It is a happy number.

73401552 is a `hidden beast` number, since 73 + 40 + 1 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (73401547) and next prime (73401557).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73401557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2367777 + ... + 2367807.

Almost surely, 2^73401552 is an apocalyptic number.

73401552 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73401552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130110720).

73401552 is an abundant number, since it is smaller than the sum of its proper divisors (186819888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73401552 is a wasteful number, since it uses less digits than its factorization.

73401552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 73401552 is about 8567.4705718783. The cubic root of 73401552 is about 418.6988302515.

Adding to 73401552 its reverse (25510437), we get a palindrome (98911989).

The spelling of 73401552 in words is "seventy-three million, four hundred one thousand, five hundred fifty-two".