51455361 has 4 divisors (see below), whose sum is σ = 68607152. Its totient is φ = 34303572.

The previous prime is 51455321. The next prime is 51455377. The reversal of 51455361 is 16355415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51455361 - 2⁶ = 51455297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51455321) 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, 8575891 + ... + 8575896.

It is an arithmetic number, because the mean of its divisors is an integer number (17151788).

Almost surely, 2^51455361 is an apocalyptic number.

It is an amenable number.

51455361 is a deficient number, since it is larger than the sum of its proper divisors (17151791).

51455361 is a wasteful number, since it uses less digits than its factorization.

51455361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17151790.

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

The square root of 51455361 is about 7173.2392264583. The cubic root of 51455361 is about 371.9434169344.

The spelling of 51455361 in words is "fifty-one million, four hundred fifty-five thousand, three hundred sixty-one".