51151051 has 6 divisors (see below), whose sum is σ = 59502300. Its totient is φ = 43843716.

The previous prime is 51151049. The next prime is 51151063. The reversal of 51151051 is 15015115.

It is a happy number.

It is not a de Polignac number, because 51151051 - 2¹ = 51151049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51151031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 521901 + ... + 521998.

It is an arithmetic number, because the mean of its divisors is an integer number (9917050).

Almost surely, 2^51151051 is an apocalyptic number.

51151051 is a deficient number, since it is larger than the sum of its proper divisors (8351249).

51151051 is a wasteful number, since it uses less digits than its factorization.

51151051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043913 (or 1043906 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 51151051 is about 7151.9962947418. The cubic root of 51151051 is about 371.2087350357.

Adding to 51151051 its reverse (15015115), we get a palindrome (66166166).

The spelling of 51151051 in words is "fifty-one million, one hundred fifty-one thousand, fifty-one".