51124738 has 24 divisors (see below), whose sum is σ = 92288700. Its totient is φ = 21153888.

The previous prime is 51124681. The next prime is 51124751. The reversal of 51124738 is 83742115.

It can be written as a sum of positive squares in 2 ways, for example, as 49885969 + 1238769 = 7063^2 + 1113^2 .

It is a super-2 number, since 2×51124738² = 5227477671137288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6153 + ... + 11836.

Almost surely, 2^51124738 is an apocalyptic number.

51124738 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51124738 is a deficient number, since it is larger than the sum of its proper divisors (41163962).

51124738 is a wasteful number, since it uses less digits than its factorization.

51124738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034 (or 18027 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 51124738 is about 7150.1565017837. The cubic root of 51124738 is about 371.1450720180.

The spelling of 51124738 in words is "fifty-one million, one hundred twenty-four thousand, seven hundred thirty-eight".