51011070 has 32 divisors (see below), whose sum is σ = 133557120. Its totient is φ = 12366240.

The previous prime is 51011057. The next prime is 51011071. The reversal of 51011070 is 7011015.

It is a Harshad number since it is a multiple of its sum of digits (15).

51011070 is a modest number, since divided by 11070 gives 510 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76960 + ... + 77619.

It is an arithmetic number, because the mean of its divisors is an integer number (4173660).

Almost surely, 2^51011070 is an apocalyptic number.

51011070 is an abundant number, since it is smaller than the sum of its proper divisors (82546050).

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

51011070 is a wasteful number, since it uses less digits than its factorization.

51011070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154600.

The product of its (nonzero) digits is 35, while the sum is 15.

The square root of 51011070 is about 7142.2034415158. The cubic root of 51011070 is about 370.8698065656.

Adding to 51011070 its reverse (7011015), we get a palindrome (58022085).

The spelling of 51011070 in words is "fifty-one million, eleven thousand, seventy".