55987695 has 24 divisors (see below), whose sum is σ = 98280000. Its totient is φ = 29480256.

The previous prime is 55987693. The next prime is 55987739. The reversal of 55987695 is 59678955.

It is a happy number.

55987695 is a `hidden beast` number, since 559 + 87 + 6 + 9 + 5 = 666.

It is not a de Polignac number, because 55987695 - 2¹ = 55987693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55987693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4320 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (4095000).

Almost surely, 2^55987695 is an apocalyptic number.

55987695 is a deficient number, since it is larger than the sum of its proper divisors (42292305).

55987695 is a wasteful number, since it uses less digits than its factorization.

55987695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15839 (or 15836 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The square root of 55987695 is about 7482.4925659836. The cubic root of 55987695 is about 382.5582123372.

The spelling of 55987695 in words is "fifty-five million, nine hundred eighty-seven thousand, six hundred ninety-five".