51253601 has 4 divisors (see below), whose sum is σ = 58575552. Its totient is φ = 43931652.

The previous prime is 51253577. The next prime is 51253613. The reversal of 51253601 is 10635215.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10635215 = 5 ⋅2127043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51253601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51253001) 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, 3660965 + ... + 3660978.

It is an arithmetic number, because the mean of its divisors is an integer number (14643888).

Almost surely, 2^51253601 is an apocalyptic number.

It is an amenable number.

51253601 is a deficient number, since it is larger than the sum of its proper divisors (7321951).

51253601 is an equidigital number, since it uses as much as digits as its factorization.

51253601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321950.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51253601 is about 7159.1620319699. The cubic root of 51253601 is about 371.4566416022.

Adding to 51253601 its reverse (10635215), we get a palindrome (61888816).

The spelling of 51253601 in words is "fifty-one million, two hundred fifty-three thousand, six hundred one".