55764813 has 8 divisors (see below), whose sum is σ = 80072608. Its totient is φ = 34316784.

The previous prime is 55764781. The next prime is 55764823. The reversal of 55764813 is 31846755.

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

It is not a de Polignac number, because 55764813 - 2⁵ = 55764781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1429867 = 55764813 / (5 + 5 + 7 + 6 + 4 + 8 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55764823) 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, 714895 + ... + 714972.

It is an arithmetic number, because the mean of its divisors is an integer number (10009076).

Almost surely, 2^55764813 is an apocalyptic number.

It is an amenable number.

55764813 is a deficient number, since it is larger than the sum of its proper divisors (24307795).

55764813 is a wasteful number, since it uses less digits than its factorization.

55764813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429883.

The product of its digits is 100800, while the sum is 39.

The square root of 55764813 is about 7467.5841475004. The cubic root of 55764813 is about 382.0498938877.

The spelling of 55764813 in words is "fifty-five million, seven hundred sixty-four thousand, eight hundred thirteen".