49321251 has 16 divisors (see below), whose sum is σ = 83507200. Its totient is φ = 28183464.

The previous prime is 49321247. The next prime is 49321273. The reversal of 49321251 is 15212394.

It is not a de Polignac number, because 49321251 - 2² = 49321247 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49321291) 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, 130291 + ... + 130668.

It is an arithmetic number, because the mean of its divisors is an integer number (5219200).

Almost surely, 2^49321251 is an apocalyptic number.

49321251 is a deficient number, since it is larger than the sum of its proper divisors (34185949).

49321251 is a wasteful number, since it uses less digits than its factorization.

49321251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260975 (or 260969 counting only the distinct ones).

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

The square root of 49321251 is about 7022.9090126528. The cubic root of 49321251 is about 366.7285273957.

The spelling of 49321251 in words is "forty-nine million, three hundred twenty-one thousand, two hundred fifty-one".