51111051 has 16 divisors (see below), whose sum is σ = 71003520. Its totient is φ = 32674880.

The previous prime is 51111031. The next prime is 51111089. The reversal of 51111051 is 15011115.

51111051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51111051 - 2⁶ = 51110987 is a prime.

It is a super-2 number, since 2×51111051² = 5224679068649202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51111051.

It is not an unprimeable number, because it can be changed into a prime (51111031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3736 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (4437720).

Almost surely, 2^51111051 is an apocalyptic number.

51111051 is a deficient number, since it is larger than the sum of its proper divisors (19892469).

51111051 is a wasteful number, since it uses less digits than its factorization.

51111051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146.

The product of its (nonzero) digits is 25, while the sum is 15.

The square root of 51111051 is about 7149.1993257987. The cubic root of 51111051 is about 371.1119483536. Note that the first 3 decimals are identical.

Adding to 51111051 its reverse (15011115), we get a palindrome (66122166).

The spelling of 51111051 in words is "fifty-one million, one hundred eleven thousand, fifty-one".