51440035 has 16 divisors (see below), whose sum is σ = 64320480. Its totient is φ = 39458560.

The previous prime is 51440023. The next prime is 51440047. The reversal of 51440035 is 53004415.

It is an interprime number because it is at equal distance from previous prime (51440023) and next prime (51440047).

It is not a de Polignac number, because 51440035 - 2⁵ = 51440003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51439988 and 51440015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9969 + ... + 14221.

It is an arithmetic number, because the mean of its divisors is an integer number (4020030).

Almost surely, 2^51440035 is an apocalyptic number.

51440035 is a deficient number, since it is larger than the sum of its proper divisors (12880445).

51440035 is a wasteful number, since it uses less digits than its factorization.

51440035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51440035 is about 7172.1708708033. The cubic root of 51440035 is about 371.9064854353.

The spelling of 51440035 in words is "fifty-one million, four hundred forty thousand, thirty-five".