55993797 has 12 divisors (see below), whose sum is σ = 80945280. Its totient is φ = 37299048.

The previous prime is 55993793. The next prime is 55993813. The reversal of 55993797 is 79739955.

It is not a de Polignac number, because 55993797 - 2² = 55993793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55993793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18454 + ... + 21272.

It is an arithmetic number, because the mean of its divisors is an integer number (6745440).

Almost surely, 2^55993797 is an apocalyptic number.

It is an amenable number.

55993797 is a deficient number, since it is larger than the sum of its proper divisors (24951483).

55993797 is a wasteful number, since it uses less digits than its factorization.

55993797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032 (or 5029 counting only the distinct ones).

The product of its digits is 2679075, while the sum is 54.

The square root of 55993797 is about 7482.9003066993. The cubic root of 55993797 is about 382.5721099470.

The spelling of 55993797 in words is "fifty-five million, nine hundred ninety-three thousand, seven hundred ninety-seven".