51107742 has 48 divisors (see below), whose sum is σ = 126951552. Its totient is φ = 14556240.

The previous prime is 51107737. The next prime is 51107743. The reversal of 51107742 is 24770115.

It is a super-2 number, since 2×51107742² = 5224002584677128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51107743) 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, 73617 + ... + 74307.

It is an arithmetic number, because the mean of its divisors is an integer number (2644824).

Almost surely, 2^51107742 is an apocalyptic number.

51107742 is an abundant number, since it is smaller than the sum of its proper divisors (75843810).

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

51107742 is a wasteful number, since it uses less digits than its factorization.

51107742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 51107742 is about 7148.9678975360. The cubic root of 51107742 is about 371.1039394141.

Adding to 51107742 its reverse (24770115), we get a palindrome (75877857).

The spelling of 51107742 in words is "fifty-one million, one hundred seven thousand, seven hundred forty-two".