51626401 has 8 divisors (see below), whose sum is σ = 54514400. Its totient is φ = 48755520.

The previous prime is 51626387. The next prime is 51626431. The reversal of 51626401 is 10462615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51626401 - 2⁵ = 51626369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51626431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2185 + ... + 10393.

It is an arithmetic number, because the mean of its divisors is an integer number (6814300).

Almost surely, 2^51626401 is an apocalyptic number.

It is an amenable number.

51626401 is a deficient number, since it is larger than the sum of its proper divisors (2887999).

51626401 is a wasteful number, since it uses less digits than its factorization.

51626401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51626401 is about 7185.1514249875. The cubic root of 51626401 is about 372.3550801822.

The spelling of 51626401 in words is "fifty-one million, six hundred twenty-six thousand, four hundred one".