49215321 has 24 divisors (see below), whose sum is σ = 73731840. Its totient is φ = 31600800.

The previous prime is 49215317. The next prime is 49215367. The reversal of 49215321 is 12351294.

49215321 is a `hidden beast` number, since 492 + 153 + 21 = 666.

It is not a de Polignac number, because 49215321 - 2² = 49215317 is a prime.

It is a super-2 number, since 2×49215321² = 4844295642266082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49215371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116691 + ... + 117111.

It is an arithmetic number, because the mean of its divisors is an integer number (3072160).

Almost surely, 2^49215321 is an apocalyptic number.

It is an amenable number.

49215321 is a deficient number, since it is larger than the sum of its proper divisors (24516519).

49215321 is a wasteful number, since it uses less digits than its factorization.

49215321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 49215321 is about 7015.3632122649. The cubic root of 49215321 is about 366.4657914415.

The spelling of 49215321 in words is "forty-nine million, two hundred fifteen thousand, three hundred twenty-one".