49153391 has 4 divisors (see below), whose sum is σ = 56175312. Its totient is φ = 42131472.

The previous prime is 49153331. The next prime is 49153417. The reversal of 49153391 is 19335194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19335194 = 2 ⋅9667597.

It is a cyclic number.

It is not a de Polignac number, because 49153391 - 2²² = 44959087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49153331) 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, 3510950 + ... + 3510963.

It is an arithmetic number, because the mean of its divisors is an integer number (14043828).

Almost surely, 2^49153391 is an apocalyptic number.

49153391 is a deficient number, since it is larger than the sum of its proper divisors (7021921).

49153391 is an equidigital number, since it uses as much as digits as its factorization.

49153391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021920.

The product of its digits is 14580, while the sum is 35.

The square root of 49153391 is about 7010.9479387598. The cubic root of 49153391 is about 366.3120130912.

The spelling of 49153391 in words is "forty-nine million, one hundred fifty-three thousand, three hundred ninety-one".