51245558 has 32 divisors (see below), whose sum is σ = 95047680. Its totient is φ = 20178720.

The previous prime is 51245539. The next prime is 51245561. The reversal of 51245558 is 85554215.

It is a super-3 number, since 3×51245558³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48803 + ... + 49841.

It is an arithmetic number, because the mean of its divisors is an integer number (2970240).

Almost surely, 2^51245558 is an apocalyptic number.

51245558 is a deficient number, since it is larger than the sum of its proper divisors (43802122).

51245558 is a wasteful number, since it uses less digits than its factorization.

51245558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332.

The product of its digits is 40000, while the sum is 35.

The square root of 51245558 is about 7158.6002821781. The cubic root of 51245558 is about 371.4372102386.

The spelling of 51245558 in words is "fifty-one million, two hundred forty-five thousand, five hundred fifty-eight".