51807401 has 4 divisors (see below), whose sum is σ = 51898704. Its totient is φ = 51716100.

The previous prime is 51807397. The next prime is 51807419. The reversal of 51807401 is 10470815.

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 51807401 - 2² = 51807397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51807451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44795 + ... + 45936.

It is an arithmetic number, because the mean of its divisors is an integer number (12974676).

Almost surely, 2^51807401 is an apocalyptic number.

It is an amenable number.

51807401 is a deficient number, since it is larger than the sum of its proper divisors (91303).

51807401 is an equidigital number, since it uses as much as digits as its factorization.

51807401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91302.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 51807401 is about 7197.7358245493. The cubic root of 51807401 is about 372.7897263995.

The spelling of 51807401 in words is "fifty-one million, eight hundred seven thousand, four hundred one".