51253245 has 12 divisors (see below), whose sum is σ = 88839036. Its totient is φ = 27335040.

The previous prime is 51253219. The next prime is 51253271. The reversal of 51253245 is 54235215.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51253219) and next prime (51253271).

It can be written as a sum of positive squares in 2 ways, for example, as 5731236 + 45522009 = 2394^2 + 6747^2 .

It is not a de Polignac number, because 51253245 - 2⁷ = 51253117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569436 + ... + 569525.

It is an arithmetic number, because the mean of its divisors is an integer number (7403253).

Almost surely, 2^51253245 is an apocalyptic number.

It is an amenable number.

51253245 is a deficient number, since it is larger than the sum of its proper divisors (37585791).

51253245 is a wasteful number, since it uses less digits than its factorization.

51253245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138972 (or 1138969 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51253245 is about 7159.1371686817. The cubic root of 51253245 is about 371.4557815724.

The spelling of 51253245 in words is "fifty-one million, two hundred fifty-three thousand, two hundred forty-five".