51308355 has 16 divisors (see below), whose sum is σ = 93821184. Its totient is φ = 23455200.

The previous prime is 51308321. The next prime is 51308357. The reversal of 51308355 is 55380315.

It is not a de Polignac number, because 51308355 - 2⁸ = 51308099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51308357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244221 + ... + 244430.

It is an arithmetic number, because the mean of its divisors is an integer number (5863824).

Almost surely, 2^51308355 is an apocalyptic number.

51308355 is a deficient number, since it is larger than the sum of its proper divisors (42512829).

51308355 is a wasteful number, since it uses less digits than its factorization.

51308355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488666.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 51308355 is about 7162.9850621092. The cubic root of 51308355 is about 371.5888697010.

The spelling of 51308355 in words is "fifty-one million, three hundred eight thousand, three hundred fifty-five".