51131045 has 8 divisors (see below), whose sum is σ = 70122624. Its totient is φ = 35061264.

The previous prime is 51131039. The next prime is 51131051. The reversal of 51131045 is 54013115.

It is an interprime number because it is at equal distance from previous prime (51131039) and next prime (51131051).

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

It is not a de Polignac number, because 51131045 - 2⁴ = 51131029 is a prime.

It is a super-2 number, since 2×51131045² = 5228767525584050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 730409 + ... + 730478.

It is an arithmetic number, because the mean of its divisors is an integer number (8765328).

Almost surely, 2^51131045 is an apocalyptic number.

It is an amenable number.

51131045 is a deficient number, since it is larger than the sum of its proper divisors (18991579).

51131045 is a wasteful number, since it uses less digits than its factorization.

51131045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460899.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51131045 is about 7150.5975274798. The cubic root of 51131045 is about 371.1603334863.

The spelling of 51131045 in words is "fifty-one million, one hundred thirty-one thousand, forty-five".