50918553 has 24 divisors (see below), whose sum is σ = 89002368. Its totient is φ = 27384192.

The previous prime is 50918509. The next prime is 50918557. The reversal of 50918553 is 35581905.

It is a happy number.

It is not a de Polignac number, because 50918553 - 2⁹ = 50918041 is a prime.

It is a super-2 number, since 2×50918553² = 5185398079227618, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50918557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22701 + ... + 24842.

It is an arithmetic number, because the mean of its divisors is an integer number (3708432).

Almost surely, 2^50918553 is an apocalyptic number.

It is an amenable number.

50918553 is a deficient number, since it is larger than the sum of its proper divisors (38083815).

50918553 is a wasteful number, since it uses less digits than its factorization.

50918553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47573 (or 47570 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 50918553 is about 7135.7237194275. The cubic root of 50918553 is about 370.6454596662.

The spelling of 50918553 in words is "fifty million, nine hundred eighteen thousand, five hundred fifty-three".