51701930 has 64 divisors (see below), whose sum is σ = 117573120. Its totient is φ = 15949824.

The previous prime is 51701929. The next prime is 51701933. The reversal of 51701930 is 3910715.

It is a self number, because there is not a number n which added to its sum of digits gives 51701930.

It is not an unprimeable number, because it can be changed into a prime (51701933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26426 + ... + 28314.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^51701930 is an apocalyptic number.

51701930 is an abundant number, since it is smaller than the sum of its proper divisors (65871190).

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

51701930 is a wasteful number, since it uses less digits than its factorization.

51701930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 51701930 is about 7190.4054127705. The cubic root of 51701930 is about 372.5365758419.

The spelling of 51701930 in words is "fifty-one million, seven hundred one thousand, nine hundred thirty".