51551045 has 32 divisors (see below), whose sum is σ = 76785408. Its totient is φ = 32352768.

The previous prime is 51550999. The next prime is 51551077. The reversal of 51551045 is 54015515.

It is not a de Polignac number, because 51551045 - 2⁸ = 51550789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61922 + ... + 62748.

It is an arithmetic number, because the mean of its divisors is an integer number (2399544).

Almost surely, 2^51551045 is an apocalyptic number.

It is an amenable number.

51551045 is a deficient number, since it is larger than the sum of its proper divisors (25234363).

51551045 is a wasteful number, since it uses less digits than its factorization.

51551045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 51551045 is about 7179.9056400485. The cubic root of 51551045 is about 372.1738237444.

The spelling of 51551045 in words is "fifty-one million, five hundred fifty-one thousand, forty-five".