51031045 has 8 divisors (see below), whose sum is σ = 65947896. Its totient is φ = 37684416.

The previous prime is 51031031. The next prime is 51031073. The reversal of 51031045 is 54013015.

It can be written as a sum of positive squares in 4 ways, for example, as 1483524 + 49547521 = 1218^2 + 7039^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51031045 - 2⁹ = 51030533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392482 + ... + 392611.

It is an arithmetic number, because the mean of its divisors is an integer number (8243487).

Almost surely, 2^51031045 is an apocalyptic number.

It is an amenable number.

51031045 is a deficient number, since it is larger than the sum of its proper divisors (14916851).

51031045 is a wasteful number, since it uses less digits than its factorization.

51031045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785111.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51031045 is about 7143.6016826248. The cubic root of 51031045 is about 370.9182088545.

The spelling of 51031045 in words is "fifty-one million, thirty-one thousand, forty-five".