73212552 has 128 divisors (see below), whose sum is σ = 238291200. Its totient is φ = 20390400.

The previous prime is 73212541. The next prime is 73212563. The reversal of 73212552 is 25521237.

It is an interprime number because it is at equal distance from previous prime (73212541) and next prime (73212563).

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

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61402 + ... + 62582.

It is an arithmetic number, because the mean of its divisors is an integer number (1861650).

Almost surely, 2^73212552 is an apocalyptic number.

73212552 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 73212552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119145600).

73212552 is an abundant number, since it is smaller than the sum of its proper divisors (165078648).

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

73212552 is a wasteful number, since it uses less digits than its factorization.

73212552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1234 counting only the distinct ones).

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

The square root of 73212552 is about 8556.4333691089. The cubic root of 73212552 is about 418.3391553116.

Adding to 73212552 its reverse (25521237), we get a palindrome (98733789).

The spelling of 73212552 in words is "seventy-three million, two hundred twelve thousand, five hundred fifty-two".