51163554 has 16 divisors (see below), whose sum is σ = 110198592. Its totient is φ = 15742608.

The previous prime is 51163549. The next prime is 51163571. The reversal of 51163554 is 45536115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327894 + ... + 328049.

It is an arithmetic number, because the mean of its divisors is an integer number (6887412).

Almost surely, 2^51163554 is an apocalyptic number.

51163554 is an abundant number, since it is smaller than the sum of its proper divisors (59035038).

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

51163554 is a wasteful number, since it uses less digits than its factorization.

51163554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655961.

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

The square root of 51163554 is about 7152.8703329503. The cubic root of 51163554 is about 371.2389777816.

Adding to 51163554 its reverse (45536115), we get a palindrome (96699669).

The spelling of 51163554 in words is "fifty-one million, one hundred sixty-three thousand, five hundred fifty-four".