87540518 has 16 divisors (see below), whose sum is σ = 144702096. Its totient is φ = 39463200.

The previous prime is 87540511. The next prime is 87540529. The reversal of 87540518 is 81504578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87540511) 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, 38033 + ... + 40268.

It is an arithmetic number, because the mean of its divisors is an integer number (9043881).

Almost surely, 2^87540518 is an apocalyptic number.

87540518 is a deficient number, since it is larger than the sum of its proper divisors (57161578).

87540518 is a wasteful number, since it uses less digits than its factorization.

87540518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78359.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 87540518 is about 9356.3089944700. The cubic root of 87540518 is about 444.0205161907.

The spelling of 87540518 in words is "eighty-seven million, five hundred forty thousand, five hundred eighteen".