51526401 has 4 divisors (see below), whose sum is σ = 68701872. Its totient is φ = 34350932.

The previous prime is 51526369. The next prime is 51526451. The reversal of 51526401 is 10462515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51526401 - 2⁵ = 51526369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51526451) 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, 8587731 + ... + 8587736.

It is an arithmetic number, because the mean of its divisors is an integer number (17175468).

Almost surely, 2^51526401 is an apocalyptic number.

It is an amenable number.

51526401 is a deficient number, since it is larger than the sum of its proper divisors (17175471).

51526401 is a wasteful number, since it uses less digits than its factorization.

51526401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17175470.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51526401 is about 7178.1892563515. The cubic root of 51526401 is about 372.1145083375.

Adding to 51526401 its reverse (10462515), we get a palindrome (61988916).

The spelling of 51526401 in words is "fifty-one million, five hundred twenty-six thousand, four hundred one".