51601151 has 4 divisors (see below), whose sum is σ = 58972752. Its totient is φ = 44229552.

The previous prime is 51601129. The next prime is 51601153. The reversal of 51601151 is 15110615.

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 51601151 - 2⁶ = 51601087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601153) 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, 3685790 + ... + 3685803.

It is an arithmetic number, because the mean of its divisors is an integer number (14743188).

Almost surely, 2^51601151 is an apocalyptic number.

51601151 is a deficient number, since it is larger than the sum of its proper divisors (7371601).

51601151 is an equidigital number, since it uses as much as digits as its factorization.

51601151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371600.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 51601151 is about 7183.3941142053. The cubic root of 51601151 is about 372.2943651293.

Adding to 51601151 its reverse (15110615), we get a palindrome (66711766).

The spelling of 51601151 in words is "fifty-one million, six hundred one thousand, one hundred fifty-one".