49987520 has 84 divisors (see below), whose sum is σ = 130939032. Its totient is φ = 18163200.

The previous prime is 49987517. The next prime is 49987523. The reversal of 49987520 is 2578994.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (49987517) and next prime (49987523).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49987523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38075 + ... + 39365.

It is an arithmetic number, because the mean of its divisors is an integer number (1558798).

Almost surely, 2^49987520 is an apocalyptic number.

49987520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49987520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65469516).

49987520 is an abundant number, since it is smaller than the sum of its proper divisors (80951512).

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

49987520 is a wasteful number, since it uses less digits than its factorization.

49987520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 49987520 is about 7070.1852875296. The cubic root of 49987520 is about 368.3724961714.

The spelling of 49987520 in words is "forty-nine million, nine hundred eighty-seven thousand, five hundred twenty".