51936401 has 4 divisors (see below), whose sum is σ = 56657904. Its totient is φ = 47214900.

The previous prime is 51936397. The next prime is 51936407. The reversal of 51936401 is 10463915.

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 51936401 - 2² = 51936397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51936407) 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, 2360735 + ... + 2360756.

It is an arithmetic number, because the mean of its divisors is an integer number (14164476).

Almost surely, 2^51936401 is an apocalyptic number.

It is an amenable number.

51936401 is a deficient number, since it is larger than the sum of its proper divisors (4721503).

51936401 is a wasteful number, since it uses less digits than its factorization.

51936401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721502.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 51936401 is about 7206.6914045212. The cubic root of 51936401 is about 373.0988843862.

The spelling of 51936401 in words is "fifty-one million, nine hundred thirty-six thousand, four hundred one".