51942852 has 36 divisors (see below), whose sum is σ = 141401260. Its totient is φ = 15982272.

The previous prime is 51942851. The next prime is 51942853. The reversal of 51942852 is 25824915.

It is an interprime number because it is at equal distance from previous prime (51942851) and next prime (51942853).

It can be written as a sum of positive squares in 2 ways, for example, as 34503876 + 17438976 = 5874^2 + 4176^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51942851) 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 11 ways as a sum of consecutive naturals, for example, 55027 + ... + 55962.

Almost surely, 2^51942852 is an apocalyptic number.

51942852 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51942852 is an abundant number, since it is smaller than the sum of its proper divisors (89458408).

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

51942852 is a wasteful number, since it uses less digits than its factorization.

51942852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111012 (or 111007 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51942852 is about 7207.1389607805. The cubic root of 51942852 is about 373.1143312354.

The spelling of 51942852 in words is "fifty-one million, nine hundred forty-two thousand, eight hundred fifty-two".