49901520 has 40 divisors (see below), whose sum is σ = 154695456. Its totient is φ = 13307008.

The previous prime is 49901503. The next prime is 49901521. The reversal of 49901520 is 2510994.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49901521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103722 + ... + 104201.

Almost surely, 2^49901520 is an apocalyptic number.

49901520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49901520 is an abundant number, since it is smaller than the sum of its proper divisors (104793936).

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

49901520 is a wasteful number, since it uses less digits than its factorization.

49901520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207939 (or 207933 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 49901520 is about 7064.1007920329. The cubic root of 49901520 is about 368.1611219470.

The spelling of 49901520 in words is "forty-nine million, nine hundred one thousand, five hundred twenty".