52401251 has 4 divisors (see below), whose sum is σ = 59887152. Its totient is φ = 44915352.

The previous prime is 52401247. The next prime is 52401269. The reversal of 52401251 is 15210425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52401251 - 2² = 52401247 is a prime.

It is a super-2 number, since 2×52401251² = 5491782212730002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52401281) 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, 3742940 + ... + 3742953.

It is an arithmetic number, because the mean of its divisors is an integer number (14971788).

Almost surely, 2^52401251 is an apocalyptic number.

52401251 is a deficient number, since it is larger than the sum of its proper divisors (7485901).

52401251 is an equidigital number, since it uses as much as digits as its factorization.

52401251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485900.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 52401251 is about 7238.8708373613. The cubic root of 52401251 is about 374.2087041843.

Adding to 52401251 its reverse (15210425), we get a palindrome (67611676).

The spelling of 52401251 in words is "fifty-two million, four hundred one thousand, two hundred fifty-one".