55767387 has 16 divisors (see below), whose sum is σ = 83559168. Its totient is φ = 32825760.

The previous prime is 55767379. The next prime is 55767389. The reversal of 55767387 is 78376755.

It is not a de Polignac number, because 55767387 - 2³ = 55767379 is a prime.

It is a super-2 number, since 2×55767387² = 6220002905615538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55767389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30189 + ... + 31982.

It is an arithmetic number, because the mean of its divisors is an integer number (5222448).

Almost surely, 2^55767387 is an apocalyptic number.

55767387 is a deficient number, since it is larger than the sum of its proper divisors (27791781).

55767387 is a wasteful number, since it uses less digits than its factorization.

55767387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62210.

The product of its digits is 1234800, while the sum is 48.

The square root of 55767387 is about 7467.7564904059. The cubic root of 55767387 is about 382.0557720347.

The spelling of 55767387 in words is "fifty-five million, seven hundred sixty-seven thousand, three hundred eighty-seven".