51402236 has 12 divisors (see below), whose sum is σ = 90011880. Its totient is φ = 25684560.

The previous prime is 51402193. The next prime is 51402251. The reversal of 51402236 is 63220415.

51402236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5171 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (7500990).

Almost surely, 2^51402236 is an apocalyptic number.

It is an amenable number.

51402236 is a deficient number, since it is larger than the sum of its proper divisors (38609644).

51402236 is a wasteful number, since it uses less digits than its factorization.

51402236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51402236 is about 7169.5352708526. The cubic root of 51402236 is about 371.8153687404.

The spelling of 51402236 in words is "fifty-one million, four hundred two thousand, two hundred thirty-six".