87461955 has 24 divisors (see below), whose sum is σ = 173258592. Its totient is φ = 39982464.

The previous prime is 87461917. The next prime is 87461977. The reversal of 87461955 is 55916478.

It is not a de Polignac number, because 87461955 - 2⁷ = 87461827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87461955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138514 + ... + 139143.

It is an arithmetic number, because the mean of its divisors is an integer number (7219108).

Almost surely, 2^87461955 is an apocalyptic number.

87461955 is a deficient number, since it is larger than the sum of its proper divisors (85796637).

87461955 is a wasteful number, since it uses less digits than its factorization.

87461955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277675 (or 277672 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 87461955 is about 9352.1096550458. The cubic root of 87461955 is about 443.8876481002.

It can be divided in two parts, 8746 and 1955, that added together give a palindrome (10701).

The spelling of 87461955 in words is "eighty-seven million, four hundred sixty-one thousand, nine hundred fifty-five".