49725381 has 4 divisors (see below), whose sum is σ = 66300512. Its totient is φ = 33150252.

The previous prime is 49725367. The next prime is 49725397. The reversal of 49725381 is 18352794.

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.

It is not a de Polignac number, because 49725381 - 2⁷ = 49725253 is a prime.

It is a super-2 number, since 2×49725381² = 4945227031190322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49725301) 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, 8287561 + ... + 8287566.

It is an arithmetic number, because the mean of its divisors is an integer number (16575128).

Almost surely, 2^49725381 is an apocalyptic number.

It is an amenable number.

49725381 is a deficient number, since it is larger than the sum of its proper divisors (16575131).

49725381 is a wasteful number, since it uses less digits than its factorization.

49725381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16575130.

The product of its digits is 60480, while the sum is 39.

The square root of 49725381 is about 7051.6225792366. The cubic root of 49725381 is about 367.7274412364.

It can be divided in two parts, 497 and 25381, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 49725381 in words is "forty-nine million, seven hundred twenty-five thousand, three hundred eighty-one".