72152552 has 16 divisors (see below), whose sum is σ = 135515940. Its totient is φ = 36014976.

The previous prime is 72152527. The next prime is 72152599. The reversal of 72152552 is 25525127.

It can be written as a sum of positive squares in 2 ways, for example, as 68128516 + 4024036 = 8254^2 + 2006^2 .

It is a super-2 number, since 2×72152552² = 10411981520225408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2453 + ... + 12260.

Almost surely, 2^72152552 is an apocalyptic number.

It is an amenable number.

72152552 is a deficient number, since it is larger than the sum of its proper divisors (63363388).

72152552 is a wasteful number, since it uses less digits than its factorization.

72152552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332 (or 15328 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 72152552 is about 8494.2658305471. The cubic root of 72152552 is about 416.3103730363.

Adding to 72152552 its reverse (25525127), we get a palindrome (97677679).

The spelling of 72152552 in words is "seventy-two million, one hundred fifty-two thousand, five hundred fifty-two".