51135862 has 16 divisors (see below), whose sum is σ = 77501952. Its totient is φ = 25303680.

The previous prime is 51135853. The next prime is 51135863. The reversal of 51135862 is 26853115.

It is a super-2 number, since 2×51135862² = 5229752764966088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51135863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133323 + ... + 133705.

It is an arithmetic number, because the mean of its divisors is an integer number (4843872).

Almost surely, 2^51135862 is an apocalyptic number.

51135862 is a deficient number, since it is larger than the sum of its proper divisors (26366090).

51135862 is a wasteful number, since it uses less digits than its factorization.

51135862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903.

The product of its digits is 7200, while the sum is 31.

The square root of 51135862 is about 7150.9343445455. The cubic root of 51135862 is about 371.1719886571.

Adding to 51135862 its reverse (26853115), we get a palindrome (77988977).

The spelling of 51135862 in words is "fifty-one million, one hundred thirty-five thousand, eight hundred sixty-two".