51472897 has 4 divisors (see below), whose sum is σ = 58826176. Its totient is φ = 44119620.

The previous prime is 51472891. The next prime is 51472909. The reversal of 51472897 is 79827415.

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 a cyclic number.

It is not a de Polignac number, because 51472897 - 2⁷ = 51472769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51472891) 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, 3676629 + ... + 3676642.

It is an arithmetic number, because the mean of its divisors is an integer number (14706544).

Almost surely, 2^51472897 is an apocalyptic number.

It is an amenable number.

51472897 is a deficient number, since it is larger than the sum of its proper divisors (7353279).

51472897 is an equidigital number, since it uses as much as digits as its factorization.

51472897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7353278.

The product of its digits is 141120, while the sum is 43.

The square root of 51472897 is about 7174.4614432025. The cubic root of 51472897 is about 371.9856649388.

The spelling of 51472897 in words is "fifty-one million, four hundred seventy-two thousand, eight hundred ninety-seven".