49451251 has 4 divisors (see below), whose sum is σ = 49658400. Its totient is φ = 49244104.

The previous prime is 49451239. The next prime is 49451257. The reversal of 49451251 is 15215494.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49451251 - 2⁷ = 49451123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49451257) 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, 103216 + ... + 103693.

It is an arithmetic number, because the mean of its divisors is an integer number (12414600).

Almost surely, 2^49451251 is an apocalyptic number.

49451251 is a deficient number, since it is larger than the sum of its proper divisors (207149).

49451251 is a wasteful number, since it uses less digits than its factorization.

49451251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207148.

The product of its digits is 7200, while the sum is 31.

The square root of 49451251 is about 7032.1583457712. The cubic root of 49451251 is about 367.0504500432.

The spelling of 49451251 in words is "forty-nine million, four hundred fifty-one thousand, two hundred fifty-one".