87253172 has 6 divisors (see below), whose sum is σ = 152693058. Its totient is φ = 43626584.

The previous prime is 87253157. The next prime is 87253181. The reversal of 87253172 is 27135278.

It can be written as a sum of positive squares in only one way, i.e., 71301136 + 15952036 = 8444^2 + 3994^2 .

It is a super-3 number, since 3×87253172³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10906643 + ... + 10906650.

It is an arithmetic number, because the mean of its divisors is an integer number (25448843).

Almost surely, 2^87253172 is an apocalyptic number.

It is an amenable number.

87253172 is a deficient number, since it is larger than the sum of its proper divisors (65439886).

87253172 is a wasteful number, since it uses less digits than its factorization.

87253172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21813297 (or 21813295 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 87253172 is about 9340.9406378587. The cubic root of 87253172 is about 443.5341609330.

The spelling of 87253172 in words is "eighty-seven million, two hundred fifty-three thousand, one hundred seventy-two".