51107070 has 32 divisors (see below), whose sum is σ = 140179968. Its totient is φ = 11681568.

The previous prime is 51107059. The next prime is 51107087. The reversal of 51107070 is 7070115.

It is a super-2 number, since 2×51107070² = 5223865207969800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

51107070 is a modest number, since divided by 7070 gives 5110 as remainder.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121474 + ... + 121893.

It is an arithmetic number, because the mean of its divisors is an integer number (4380624).

Almost surely, 2^51107070 is an apocalyptic number.

51107070 is an abundant number, since it is smaller than the sum of its proper divisors (89072898).

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

51107070 is a wasteful number, since it uses less digits than its factorization.

51107070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243384.

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 51107070 is about 7148.9208975901. The cubic root of 51107070 is about 371.1023128964.

Adding to 51107070 its reverse (7070115), we get a palindrome (58177185).

The spelling of 51107070 in words is "fifty-one million, one hundred seven thousand, seventy".