49651520 has 28 divisors (see below), whose sum is σ = 118233444. Its totient is φ = 19860480.

The previous prime is 49651517. The next prime is 49651523. The reversal of 49651520 is 2515694.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (49651517) and next prime (49651523).

It can be written as a sum of positive squares in 2 ways, for example, as 28047616 + 21603904 = 5296^2 + 4648^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49651523) 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, 77261 + ... + 77900.

It is an arithmetic number, because the mean of its divisors is an integer number (4222623).

Almost surely, 2^49651520 is an apocalyptic number.

49651520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49651520 is an abundant number, since it is smaller than the sum of its proper divisors (68581924).

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

49651520 is a wasteful number, since it uses less digits than its factorization.

49651520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155178 (or 155168 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 49651520 is about 7046.3834695537. The cubic root of 49651520 is about 367.5452795644.

The spelling of 49651520 in words is "forty-nine million, six hundred fifty-one thousand, five hundred twenty".