51255293 has 16 divisors (see below), whose sum is σ = 57386880. Its totient is φ = 45549504.

The previous prime is 51255287. The next prime is 51255299. The reversal of 51255293 is 39255215.

It is an interprime number because it is at equal distance from previous prime (51255287) and next prime (51255299).

It is a cyclic number.

It is not a de Polignac number, because 51255293 - 2¹⁴ = 51238909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22055 + ... + 24267.

It is an arithmetic number, because the mean of its divisors is an integer number (3586680).

Almost surely, 2^51255293 is an apocalyptic number.

51255293 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51255293 is a deficient number, since it is larger than the sum of its proper divisors (6131587).

51255293 is a wasteful number, since it uses less digits than its factorization.

51255293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308.

The product of its digits is 13500, while the sum is 32.

The square root of 51255293 is about 7159.2802012493. The cubic root of 51255293 is about 371.4607291050.

The spelling of 51255293 in words is "fifty-one million, two hundred fifty-five thousand, two hundred ninety-three".