49651613 has 4 divisors (see below), whose sum is σ = 54165408. Its totient is φ = 45137820.

The previous prime is 49651603. The next prime is 49651643. The reversal of 49651613 is 31615694.

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 a cyclic number.

It is not a de Polignac number, because 49651613 - 2¹⁰ = 49650589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49651603) 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, 2256881 + ... + 2256902.

It is an arithmetic number, because the mean of its divisors is an integer number (13541352).

Almost surely, 2^49651613 is an apocalyptic number.

It is an amenable number.

49651613 is a deficient number, since it is larger than the sum of its proper divisors (4513795).

49651613 is a wasteful number, since it uses less digits than its factorization.

49651613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513794.

The product of its digits is 19440, while the sum is 35.

The square root of 49651613 is about 7046.3900686806. The cubic root of 49651613 is about 367.5455090417.

The spelling of 49651613 in words is "forty-nine million, six hundred fifty-one thousand, six hundred thirteen".