51746980 has 24 divisors (see below), whose sum is σ = 115061688. Its totient is φ = 19481088.

The previous prime is 51746977. The next prime is 51746983. The reversal of 51746980 is 8964715.

It is an interprime number because it is at equal distance from previous prime (51746977) and next prime (51746983).

It can be written as a sum of positive squares in 4 ways, for example, as 15241216 + 36505764 = 3904^2 + 6042^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51746983) 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, 75759 + ... + 76438.

It is an arithmetic number, because the mean of its divisors is an integer number (4794237).

Almost surely, 2^51746980 is an apocalyptic number.

It is an amenable number.

51746980 is an abundant number, since it is smaller than the sum of its proper divisors (63314708).

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

51746980 is a wasteful number, since it uses less digits than its factorization.

51746980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152223 (or 152221 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 51746980 is about 7193.5373773965. The cubic root of 51746980 is about 372.6447465336.

The spelling of 51746980 in words is "fifty-one million, seven hundred forty-six thousand, nine hundred eighty".