49172637 has 4 divisors (see below), whose sum is σ = 65563520. Its totient is φ = 32781756.

The previous prime is 49172633. The next prime is 49172663. The reversal of 49172637 is 73627194.

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 49172637 - 2² = 49172633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49172595 and 49172604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49172633) 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, 8195437 + ... + 8195442.

It is an arithmetic number, because the mean of its divisors is an integer number (16390880).

Almost surely, 2^49172637 is an apocalyptic number.

It is an amenable number.

49172637 is a deficient number, since it is larger than the sum of its proper divisors (16390883).

49172637 is a wasteful number, since it uses less digits than its factorization.

49172637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16390882.

The product of its digits is 63504, while the sum is 39.

The square root of 49172637 is about 7012.3203720309. The cubic root of 49172637 is about 366.3598166501.

The spelling of 49172637 in words is "forty-nine million, one hundred seventy-two thousand, six hundred thirty-seven".