51200401 has 8 divisors (see below), whose sum is σ = 59875904. Its totient is φ = 42865200.

The previous prime is 51200393. The next prime is 51200417. The reversal of 51200401 is 10400215.

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

It is not a de Polignac number, because 51200401 - 2³ = 51200393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51200441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84750 + ... + 85351.

It is an arithmetic number, because the mean of its divisors is an integer number (7484488).

Almost surely, 2^51200401 is an apocalyptic number.

It is an amenable number.

51200401 is a deficient number, since it is larger than the sum of its proper divisors (8675503).

51200401 is a wasteful number, since it uses less digits than its factorization.

51200401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170151.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 51200401 is about 7155.4455486713. The cubic root of 51200401 is about 371.3280761017.

Adding to 51200401 its reverse (10400215), we get a palindrome (61600616).

The spelling of 51200401 in words is "fifty-one million, two hundred thousand, four hundred one".