51450790 has 16 divisors (see below), whose sum is σ = 94765968. Its totient is φ = 20101536.

The previous prime is 51450781. The next prime is 51450797. The reversal of 51450790 is 9705415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51450797) by changing a digit.

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, 59397 + ... + 60256.

It is an arithmetic number, because the mean of its divisors is an integer number (5922873).

Almost surely, 2^51450790 is an apocalyptic number.

51450790 is a deficient number, since it is larger than the sum of its proper divisors (43315178).

51450790 is a wasteful number, since it uses less digits than its factorization.

51450790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119703.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 51450790 is about 7172.9206046073. The cubic root of 51450790 is about 371.9324028329.

The spelling of 51450790 in words is "fifty-one million, four hundred fifty thousand, seven hundred ninety".