71554450 has 24 divisors (see below), whose sum is σ = 145191600. Its totient is φ = 26019600.

The previous prime is 71554429. The next prime is 71554453. The reversal of 71554450 is 5445517.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71554453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64500 + ... + 65599.

It is an arithmetic number, because the mean of its divisors is an integer number (6049650).

Almost surely, 2^71554450 is an apocalyptic number.

71554450 is an abundant number, since it is smaller than the sum of its proper divisors (73637150).

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

71554450 is a wasteful number, since it uses less digits than its factorization.

71554450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130122 (or 130117 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 71554450 is about 8458.9863458928. The cubic root of 71554450 is about 415.1568575290.

Adding to 71554450 its reverse (5445517), we get a palindrome (76999967).

The spelling of 71554450 in words is "seventy-one million, five hundred fifty-four thousand, four hundred fifty".