87542090 has 16 divisors (see below), whose sum is σ = 158371200. Its totient is φ = 34840080.

The previous prime is 87542083. The next prime is 87542123. The reversal of 87542090 is 9024578.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87542090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20006 + ... + 23985.

It is an arithmetic number, because the mean of its divisors is an integer number (9898200).

Almost surely, 2^87542090 is an apocalyptic number.

87542090 is a deficient number, since it is larger than the sum of its proper divisors (70829110).

87542090 is a wasteful number, since it uses less digits than its factorization.

87542090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44197.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 87542090 is about 9356.3930015792. The cubic root of 87542090 is about 444.0231739927.

The spelling of 87542090 in words is "eighty-seven million, five hundred forty-two thousand, ninety".