51789801 has 32 divisors (see below), whose sum is σ = 83543040. Its totient is φ = 27877824.

The previous prime is 51789797. The next prime is 51789883. The reversal of 51789801 is 10898715.

It is not a de Polignac number, because 51789801 - 2² = 51789797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51789801.

It is not an unprimeable number, because it can be changed into a prime (51785801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116686 + ... + 117128.

It is an arithmetic number, because the mean of its divisors is an integer number (2610720).

Almost surely, 2^51789801 is an apocalyptic number.

It is an amenable number.

51789801 is a deficient number, since it is larger than the sum of its proper divisors (31753239).

51789801 is a wasteful number, since it uses less digits than its factorization.

51789801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 51789801 is about 7196.5131140018. The cubic root of 51789801 is about 372.7475069343.

The spelling of 51789801 in words is "fifty-one million, seven hundred eighty-nine thousand, eight hundred one".