55756779 has 8 divisors (see below), whose sum is σ = 80061072. Its totient is φ = 34311840.

The previous prime is 55756777. The next prime is 55756781. The reversal of 55756779 is 97765755.

It is an interprime number because it is at equal distance from previous prime (55756777) and next prime (55756781).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55756779 - 2¹ = 55756777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55756777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714792 + ... + 714869.

It is an arithmetic number, because the mean of its divisors is an integer number (10007634).

Almost surely, 2^55756779 is an apocalyptic number.

55756779 is a deficient number, since it is larger than the sum of its proper divisors (24304293).

55756779 is a wasteful number, since it uses less digits than its factorization.

55756779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429677.

The product of its digits is 2315250, while the sum is 51.

The square root of 55756779 is about 7467.0462031516. The cubic root of 55756779 is about 382.0315457808.

The spelling of 55756779 in words is "fifty-five million, seven hundred fifty-six thousand, seven hundred seventy-nine".