55706287 has 36 divisors (see below), whose sum is σ = 72687600. Its totient is φ = 42653520.

The previous prime is 55706267. The next prime is 55706291. The reversal of 55706287 is 78260755.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 55706287 - 2⁷ = 55706159 is a prime.

It is a super-2 number, since 2×55706287² = 6206380822652738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55706267) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1796962 + ... + 1796992.

It is an arithmetic number, because the mean of its divisors is an integer number (2019100).

Almost surely, 2^55706287 is an apocalyptic number.

55706287 is a deficient number, since it is larger than the sum of its proper divisors (16981313).

55706287 is an equidigital number, since it uses as much as digits as its factorization.

55706287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 55706287 is about 7463.6644485132. The cubic root of 55706287 is about 381.9161914221.

The spelling of 55706287 in words is "fifty-five million, seven hundred six thousand, two hundred eighty-seven".