49131500 has 48 divisors (see below), whose sum is σ = 117071136. Its totient is φ = 17864000.

The previous prime is 49131457. The next prime is 49131517. The reversal of 49131500 is 513194.

It is a happy 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, 1034 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (2438982).

Almost surely, 2^49131500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49131500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58535568).

49131500 is an abundant number, since it is smaller than the sum of its proper divisors (67939636).

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

49131500 is a wasteful number, since it uses less digits than its factorization.

49131500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963 (or 8951 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 49131500 is about 7009.3865637444. The cubic root of 49131500 is about 366.2576246631.

Adding to 49131500 its reverse (513194), we get a palindrome (49644694).

The spelling of 49131500 in words is "forty-nine million, one hundred thirty-one thousand, five hundred".