51262490 has 16 divisors (see below), whose sum is σ = 92759040. Its totient is φ = 20396880.

The previous prime is 51262489. The next prime is 51262511. The reversal of 51262490 is 9426215.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11510 + ... + 15329.

It is an arithmetic number, because the mean of its divisors is an integer number (5797440).

Almost surely, 2^51262490 is an apocalyptic number.

51262490 is a deficient number, since it is larger than the sum of its proper divisors (41496550).

51262490 is a wasteful number, since it uses less digits than its factorization.

51262490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27037.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51262490 is about 7159.7828179352. The cubic root of 51262490 is about 371.4781144818.

The spelling of 51262490 in words is "fifty-one million, two hundred sixty-two thousand, four hundred ninety".