87442562 has 4 divisors (see below), whose sum is σ = 131163846. Its totient is φ = 43721280.

The previous prime is 87442549. The next prime is 87442583. The reversal of 87442562 is 26524478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26524478 = 2 ⋅13262239.

It can be written as a sum of positive squares in only one way, i.e., 85729081 + 1713481 = 9259^2 + 1309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21860639 + ... + 21860642.

Almost surely, 2^87442562 is an apocalyptic number.

87442562 is a deficient number, since it is larger than the sum of its proper divisors (43721284).

87442562 is a wasteful number, since it uses less digits than its factorization.

87442562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43721283.

The product of its digits is 107520, while the sum is 38.

The square root of 87442562 is about 9351.0727726823. The cubic root of 87442562 is about 443.8548378363.

The spelling of 87442562 in words is "eighty-seven million, four hundred forty-two thousand, five hundred sixty-two".