49291513 has 4 divisors (see below), whose sum is σ = 49372020. Its totient is φ = 49211008.

The previous prime is 49291481. The next prime is 49291547. The reversal of 49291513 is 31519294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31519294 = 2 ⋅15759647.

It can be written as a sum of positive squares in 2 ways, for example, as 3485689 + 45805824 = 1867^2 + 6768^2 .

It is a cyclic number.

It is not a de Polignac number, because 49291513 - 2⁵ = 49291481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49291573) 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, 39328 + ... + 40561.

It is an arithmetic number, because the mean of its divisors is an integer number (12343005).

Almost surely, 2^49291513 is an apocalyptic number.

It is an amenable number.

49291513 is a deficient number, since it is larger than the sum of its proper divisors (80507).

49291513 is an equidigital number, since it uses as much as digits as its factorization.

49291513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80506.

The product of its digits is 9720, while the sum is 34.

The square root of 49291513 is about 7020.7914795983. The cubic root of 49291513 is about 366.6548068708.

The spelling of 49291513 in words is "forty-nine million, two hundred ninety-one thousand, five hundred thirteen".