51123562 has 12 divisors (see below), whose sum is σ = 89205570. Its totient is φ = 21910056.

The previous prime is 51123511. The next prime is 51123599. The reversal of 51123562 is 26532115.

It can be written as a sum of positive squares in only one way, i.e., 47734281 + 3389281 = 6909^2 + 1841^2 .

It is a super-2 number, since 2×51123562² = 5227237183135688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260737 + ... + 260932.

Almost surely, 2^51123562 is an apocalyptic number.

51123562 is a deficient number, since it is larger than the sum of its proper divisors (38082008).

51123562 is a wasteful number, since it uses less digits than its factorization.

51123562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521685 (or 521678 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 51123562 is about 7150.0742653486. The cubic root of 51123562 is about 371.1422262335.

Adding to 51123562 its reverse (26532115), we get a palindrome (77655677).

The spelling of 51123562 in words is "fifty-one million, one hundred twenty-three thousand, five hundred sixty-two".