87547461 has 4 divisors (see below), whose sum is σ = 116729952. Its totient is φ = 58364972.

The previous prime is 87547457. The next prime is 87547469. The reversal of 87547461 is 16474578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87547461 - 2² = 87547457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87547469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14591241 + ... + 14591246.

It is an arithmetic number, because the mean of its divisors is an integer number (29182488).

Almost surely, 2^87547461 is an apocalyptic number.

It is an amenable number.

87547461 is a deficient number, since it is larger than the sum of its proper divisors (29182491).

87547461 is a wasteful number, since it uses less digits than its factorization.

87547461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29182490.

The product of its digits is 188160, while the sum is 42.

The square root of 87547461 is about 9356.6800201781. The cubic root of 87547461 is about 444.0322545759.

The spelling of 87547461 in words is "eighty-seven million, five hundred forty-seven thousand, four hundred sixty-one".