51626051 has 4 divisors (see below), whose sum is σ = 51645000. Its totient is φ = 51607104.

The previous prime is 51626039. The next prime is 51626077. The reversal of 51626051 is 15062615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15062615 = 5 ⋅3012523.

It is a cyclic number.

It is not a de Polignac number, because 51626051 - 2¹⁴ = 51609667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51626051.

It is not an unprimeable number, because it can be changed into a prime (51626551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4526 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (12911250).

Almost surely, 2^51626051 is an apocalyptic number.

51626051 is a deficient number, since it is larger than the sum of its proper divisors (18949).

51626051 is a wasteful number, since it uses less digits than its factorization.

51626051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18948.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51626051 is about 7185.1270691617. The cubic root of 51626051 is about 372.3542387227.

Adding to 51626051 its reverse (15062615), we get a palindrome (66688666).

The spelling of 51626051 in words is "fifty-one million, six hundred twenty-six thousand, fifty-one".