87477955 has 4 divisors (see below), whose sum is σ = 104973552. Its totient is φ = 69982360.

The previous prime is 87477899. The next prime is 87477961. The reversal of 87477955 is 55977478.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87477955 - 2¹¹ = 87475907 is a prime.

It is a super-2 number, since 2×87477955² = 15304785221964050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8747791 + ... + 8747800.

It is an arithmetic number, because the mean of its divisors is an integer number (26243388).

Almost surely, 2^87477955 is an apocalyptic number.

87477955 is a deficient number, since it is larger than the sum of its proper divisors (17495597).

87477955 is a wasteful number, since it uses less digits than its factorization.

87477955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17495596.

The product of its digits is 2469600, while the sum is 52.

The square root of 87477955 is about 9352.9650378904. The cubic root of 87477955 is about 443.9147142279.

The spelling of 87477955 in words is "eighty-seven million, four hundred seventy-seven thousand, nine hundred fifty-five".