51122504 has 8 divisors (see below), whose sum is σ = 95854710. Its totient is φ = 25561248.

The previous prime is 51122501. The next prime is 51122507. The reversal of 51122504 is 40522115.

It is an interprime number because it is at equal distance from previous prime (51122501) and next prime (51122507).

It can be written as a sum of positive squares in only one way, i.e., 51122500 + 4 = 7150^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51122504² = 5227020830460032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51122501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3195149 + ... + 3195164.

Almost surely, 2^51122504 is an apocalyptic number.

It is an amenable number.

51122504 is a deficient number, since it is larger than the sum of its proper divisors (44732206).

51122504 is a wasteful number, since it uses less digits than its factorization.

51122504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390319 (or 6390315 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51122504 is about 7150.0002797203. Note that the first 3 decimals coincide. The cubic root of 51122504 is about 371.1396659582.

Adding to 51122504 its reverse (40522115), we get a palindrome (91644619).

The spelling of 51122504 in words is "fifty-one million, one hundred twenty-two thousand, five hundred four".