49515820 has 12 divisors (see below), whose sum is σ = 103983264. Its totient is φ = 19806320.

The previous prime is 49515811. The next prime is 49515821. The reversal of 49515820 is 2851594.

It is not an unprimeable number, because it can be changed into a prime (49515821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237876 + ... + 1237915.

It is an arithmetic number, because the mean of its divisors is an integer number (8665272).

Almost surely, 2^49515820 is an apocalyptic number.

It is an amenable number.

49515820 is an abundant number, since it is smaller than the sum of its proper divisors (54467444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49515820 is a wasteful number, since it uses less digits than its factorization.

49515820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475800 (or 2475798 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 49515820 is about 7036.7478283650. The cubic root of 49515820 is about 367.2101343947.

The spelling of 49515820 in words is "forty-nine million, five hundred fifteen thousand, eight hundred twenty".