51045554 has 24 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 21738696.

The previous prime is 51045551. The next prime is 51045583. The reversal of 51045554 is 45554015.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51045551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14807 + ... + 17925.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^51045554 is an apocalyptic number.

51045554 is a deficient number, since it is larger than the sum of its proper divisors (38585806).

51045554 is a wasteful number, since it uses less digits than its factorization.

51045554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 51045554 is about 7144.6171345986. The cubic root of 51045554 is about 370.9533583231.

Adding to 51045554 its reverse (45554015), we get a palindrome (96599569).

It can be divided in two parts, 510 and 45554, that added together give a palindrome (46064).

The spelling of 51045554 in words is "fifty-one million, forty-five thousand, five hundred fifty-four".