49749253 has 4 divisors (see below), whose sum is σ = 51912288. Its totient is φ = 47586220.

The previous prime is 49749251. The next prime is 49749257. The reversal of 49749253 is 35294794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35294794 = 2 ⋅17647397.

It is a cyclic number.

It is not a de Polignac number, because 49749253 - 2¹ = 49749251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49749251) 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, 1081483 + ... + 1081528.

It is an arithmetic number, because the mean of its divisors is an integer number (12978072).

Almost surely, 2^49749253 is an apocalyptic number.

It is an amenable number.

49749253 is a deficient number, since it is larger than the sum of its proper divisors (2163035).

49749253 is a wasteful number, since it uses less digits than its factorization.

49749253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163034.

The product of its digits is 272160, while the sum is 43.

The square root of 49749253 is about 7053.3150362082. The cubic root of 49749253 is about 367.7862776221.

The spelling of 49749253 in words is "forty-nine million, seven hundred forty-nine thousand, two hundred fifty-three".