51142635 has 24 divisors (see below), whose sum is σ = 88954944. Its totient is φ = 27181440.

The previous prime is 51142633. The next prime is 51142657. The reversal of 51142635 is 53624115.

It is not a de Polignac number, because 51142635 - 2¹ = 51142633 is a prime.

It is a super-2 number, since 2×51142635² = 5231138229486450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51142599 and 51142608.

It is not an unprimeable number, because it can be changed into a prime (51142633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12270 + ... + 15900.

It is an arithmetic number, because the mean of its divisors is an integer number (3706456).

Almost surely, 2^51142635 is an apocalyptic number.

51142635 is a deficient number, since it is larger than the sum of its proper divisors (37812309).

51142635 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 51142635 = (15164523)₁₂.

51142635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955 (or 3952 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51142635 is about 7151.4079033432. The cubic root of 51142635 is about 371.1883753102.

It can be divided in two parts, 5 and 1142635, that multiplied together give a palindrome (5713175).

The spelling of 51142635 in words is "fifty-one million, one hundred forty-two thousand, six hundred thirty-five".