87257053 has 8 divisors (see below), whose sum is σ = 94107608. Its totient is φ = 80426304.

The previous prime is 87257041. The next prime is 87257057. The reversal of 87257053 is 35075278.

It can be written as a sum of positive squares in 4 ways, for example, as 8082649 + 79174404 = 2843^2 + 8898^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87257053 is a prime.

It is a super-2 number, since 2×87257053² = 15227586596489618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87257057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4951 + ... + 14107.

It is an arithmetic number, because the mean of its divisors is an integer number (11763451).

Almost surely, 2^87257053 is an apocalyptic number.

It is an amenable number.

87257053 is a deficient number, since it is larger than the sum of its proper divisors (6850555).

87257053 is a wasteful number, since it uses less digits than its factorization.

87257053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 87257053 is about 9341.1483769395. The cubic root of 87257053 is about 443.5407369329.

The spelling of 87257053 in words is "eighty-seven million, two hundred fifty-seven thousand, fifty-three".