51770120 has 16 divisors (see below), whose sum is σ = 116482860. Its totient is φ = 20708032.

The previous prime is 51770113. The next prime is 51770123. The reversal of 51770120 is 2107715.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50438404 + 1331716 = 7102^2 + 1154^2 .

It is not an unprimeable number, because it can be changed into a prime (51770123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647087 + ... + 647166.

Almost surely, 2^51770120 is an apocalyptic number.

It is an amenable number.

51770120 is an abundant number, since it is smaller than the sum of its proper divisors (64712740).

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

51770120 is a wasteful number, since it uses less digits than its factorization.

51770120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294264 (or 1294260 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 51770120 is about 7195.1455857404. The cubic root of 51770120 is about 372.7002841670.

Adding to 51770120 its reverse (2107715), we get a palindrome (53877835).

The spelling of 51770120 in words is "fifty-one million, seven hundred seventy thousand, one hundred twenty".