49051521 has 16 divisors (see below), whose sum is σ = 76494400. Its totient is φ = 30979584.

The previous prime is 49051493. The next prime is 49051537. The reversal of 49051521 is 12515094.

49051521 is a `hidden beast` number, since 4 + 90 + 51 + 521 = 666.

It is not a de Polignac number, because 49051521 - 2⁵ = 49051489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49056521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47296 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (4780900).

Almost surely, 2^49051521 is an apocalyptic number.

It is an amenable number.

49051521 is a deficient number, since it is larger than the sum of its proper divisors (27442879).

49051521 is a wasteful number, since it uses less digits than its factorization.

49051521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95645 (or 95639 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 49051521 is about 7003.6791045850. The cubic root of 49051521 is about 366.0587785201.

The spelling of 49051521 in words is "forty-nine million, fifty-one thousand, five hundred twenty-one".