51126245 has 16 divisors (see below), whose sum is σ = 64827840. Its totient is φ = 38600064.

The previous prime is 51126241. The next prime is 51126277. The reversal of 51126245 is 54262115.

It is a cyclic number.

It is not a de Polignac number, because 51126245 - 2² = 51126241 is a prime.

It is a super-2 number, since 2×51126245² = 5227785855600050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51126241) 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, 28289 + ... + 30041.

It is an arithmetic number, because the mean of its divisors is an integer number (4051740).

Almost surely, 2^51126245 is an apocalyptic number.

It is an amenable number.

51126245 is a deficient number, since it is larger than the sum of its proper divisors (13701595).

51126245 is a wasteful number, since it uses less digits than its factorization.

51126245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084.

The product of its digits is 2400, while the sum is 26.

The square root of 51126245 is about 7150.2618833159. The cubic root of 51126245 is about 371.1487187204.

The spelling of 51126245 in words is "fifty-one million, one hundred twenty-six thousand, two hundred forty-five".