51263938 has 32 divisors (see below), whose sum is σ = 91368000. Its totient is φ = 21309120.

The previous prime is 51263923. The next prime is 51263939. The reversal of 51263938 is 83936215.

It is a junction number, because it is equal to n+sod(n) for n = 51263897 and 51263906.

It is not an unprimeable number, because it can be changed into a prime (51263939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10008 + ... + 14236.

It is an arithmetic number, because the mean of its divisors is an integer number (2855250).

Almost surely, 2^51263938 is an apocalyptic number.

51263938 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51263938 is a deficient number, since it is larger than the sum of its proper divisors (40104062).

51263938 is a wasteful number, since it uses less digits than its factorization.

51263938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290.

The product of its digits is 38880, while the sum is 37.

The square root of 51263938 is about 7159.8839376068. The cubic root of 51263938 is about 371.4816121351.

The spelling of 51263938 in words is "fifty-one million, two hundred sixty-three thousand, nine hundred thirty-eight".