51601110 has 64 divisors (see below), whose sum is σ = 135834624. Its totient is φ = 12441600.

The previous prime is 51601097. The next prime is 51601117. The reversal of 51601110 is 1110615.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 51601110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601117) 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, 89142 + ... + 89718.

It is an arithmetic number, because the mean of its divisors is an integer number (2122416).

Almost surely, 2^51601110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51601110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67917312).

51601110 is an abundant number, since it is smaller than the sum of its proper divisors (84233514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51601110 is a wasteful number, since it uses less digits than its factorization.

51601110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 51601110 is about 7183.3912604006. The cubic root of 51601110 is about 372.2942665264.

Adding to 51601110 its reverse (1110615), we get a palindrome (52711725).

The spelling of 51601110 in words is "fifty-one million, six hundred one thousand, one hundred ten".