51356290 has 16 divisors (see below), whose sum is σ = 92530368. Its totient is φ = 20522736.

The previous prime is 51356287. The next prime is 51356339. The reversal of 51356290 is 9265315.

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, 13099 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (5783148).

Almost surely, 2^51356290 is an apocalyptic number.

51356290 is a deficient number, since it is larger than the sum of its proper divisors (41174078).

51356290 is a wasteful number, since it uses less digits than its factorization.

51356290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 51356290 is about 7166.3303021840. The cubic root of 51356290 is about 371.7045530586.

The spelling of 51356290 in words is "fifty-one million, three hundred fifty-six thousand, two hundred ninety".