55945757 has 4 divisors (see below), whose sum is σ = 63938016. Its totient is φ = 47953500.

The previous prime is 55945741. The next prime is 55945783. The reversal of 55945757 is 75754955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55945757 - 2⁴ = 55945741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55945957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3996119 + ... + 3996132.

It is an arithmetic number, because the mean of its divisors is an integer number (15984504).

Almost surely, 2^55945757 is an apocalyptic number.

It is an amenable number.

55945757 is a deficient number, since it is larger than the sum of its proper divisors (7992259).

55945757 is an equidigital number, since it uses as much as digits as its factorization.

55945757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992258.

The product of its digits is 1102500, while the sum is 47.

The square root of 55945757 is about 7479.6896325984. The cubic root of 55945757 is about 382.4626691179.

The spelling of 55945757 in words is "fifty-five million, nine hundred forty-five thousand, seven hundred fifty-seven".