51145255 has 8 divisors (see below), whose sum is σ = 70142112. Its totient is φ = 35071008.

The previous prime is 51145249. The next prime is 51145309. The reversal of 51145255 is 55254115.

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

It is not a de Polignac number, because 51145255 - 2⁵ = 51145223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730612 + ... + 730681.

It is an arithmetic number, because the mean of its divisors is an integer number (8767764).

Almost surely, 2^51145255 is an apocalyptic number.

51145255 is a deficient number, since it is larger than the sum of its proper divisors (18996857).

51145255 is a wasteful number, since it uses less digits than its factorization.

51145255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461305.

The product of its digits is 5000, while the sum is 28.

The square root of 51145255 is about 7151.5910817104. The cubic root of 51145255 is about 371.1947137722.

It can be divided in two parts, 5 and 1145255, that multiplied together give a palindrome (5726275).

The spelling of 51145255 in words is "fifty-one million, one hundred forty-five thousand, two hundred fifty-five".