55797047 has 4 divisors (see below), whose sum is σ = 55872096. Its totient is φ = 55722000.

The previous prime is 55797041. The next prime is 55797059. The reversal of 55797047 is 74079755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55797047 - 2⁴ = 55797031 is a prime.

It is a super-2 number, since 2×55797047² = 6226620907840418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55796989 and 55797007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55797041) 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, 36398 + ... + 37899.

It is an arithmetic number, because the mean of its divisors is an integer number (13968024).

Almost surely, 2^55797047 is an apocalyptic number.

55797047 is a deficient number, since it is larger than the sum of its proper divisors (75049).

55797047 is an equidigital number, since it uses as much as digits as its factorization.

55797047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75048.

The product of its (nonzero) digits is 308700, while the sum is 44.

The square root of 55797047 is about 7469.7420972882. The cubic root of 55797047 is about 382.1234924143.

The spelling of 55797047 in words is "fifty-five million, seven hundred ninety-seven thousand, forty-seven".