51124913 has 8 divisors (see below), whose sum is σ = 59531328. Its totient is φ = 42994224.

The previous prime is 51124907. The next prime is 51124919. The reversal of 51124913 is 31942115.

It is an interprime number because it is at equal distance from previous prime (51124907) and next prime (51124919).

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

It is not a de Polignac number, because 51124913 - 2⁴ = 51124897 is a prime.

It is a super-2 number, since 2×51124913² = 5227513458515138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51124919) by changing a digit.

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, 68531 + ... + 69272.

It is an arithmetic number, because the mean of its divisors is an integer number (7441416).

Almost surely, 2^51124913 is an apocalyptic number.

51124913 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51124913 is a deficient number, since it is larger than the sum of its proper divisors (8406415).

51124913 is a wasteful number, since it uses less digits than its factorization.

51124913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137863.

The product of its digits is 1080, while the sum is 26.

The square root of 51124913 is about 7150.1687392676. The cubic root of 51124913 is about 371.1454954941.

The spelling of 51124913 in words is "fifty-one million, one hundred twenty-four thousand, nine hundred thirteen".