51447402 has 24 divisors (see below), whose sum is σ = 117336960. Its totient is φ = 16246440.

The previous prime is 51447391. The next prime is 51447437. The reversal of 51447402 is 20474415.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74874 + ... + 75557.

It is an arithmetic number, because the mean of its divisors is an integer number (4889040).

Almost surely, 2^51447402 is an apocalyptic number.

51447402 is an abundant number, since it is smaller than the sum of its proper divisors (65889558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51447402 is a wasteful number, since it uses less digits than its factorization.

51447402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150458 (or 150455 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 51447402 is about 7172.6844347148. The cubic root of 51447402 is about 371.9242388206.

The spelling of 51447402 in words is "fifty-one million, four hundred forty-seven thousand, four hundred two".