51661054 has 8 divisors (see below), whose sum is σ = 77772168. Its totient is φ = 25737000.

The previous prime is 51661003. The next prime is 51661063. The reversal of 51661054 is 45016615.

51661054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46072 + ... + 47179.

It is an arithmetic number, because the mean of its divisors is an integer number (9721521).

Almost surely, 2^51661054 is an apocalyptic number.

51661054 is a deficient number, since it is larger than the sum of its proper divisors (26111114).

51661054 is a wasteful number, since it uses less digits than its factorization.

51661054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93530.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51661054 is about 7187.5624519026. The cubic root of 51661054 is about 372.4383730609.

Adding to 51661054 its reverse (45016615), we get a palindrome (96677669).

The spelling of 51661054 in words is "fifty-one million, six hundred sixty-one thousand, fifty-four".