87520258 has 16 divisors (see below), whose sum is σ = 151133184. Its totient is φ = 37234080.

The previous prime is 87520253. The next prime is 87520261. The reversal of 87520258 is 85202578.

It is a super-4 number, since 4×87520258⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (87520253) 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, 20898 + ... + 24733.

It is an arithmetic number, because the mean of its divisors is an integer number (9445824).

Almost surely, 2^87520258 is an apocalyptic number.

87520258 is a deficient number, since it is larger than the sum of its proper divisors (63612926).

87520258 is a wasteful number, since it uses less digits than its factorization.

87520258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45777.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 87520258 is about 9355.2262399153. The cubic root of 87520258 is about 443.9862594833.

It can be divided in two parts, 87520 and 258, that added together give a palindrome (87778).

The spelling of 87520258 in words is "eighty-seven million, five hundred twenty thousand, two hundred fifty-eight".