49172657 has 4 divisors (see below), whose sum is σ = 49368816. Its totient is φ = 48976500.

The previous prime is 49172633. The next prime is 49172663. The reversal of 49172657 is 75627194.

49172657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 49172657 - 2¹⁴ = 49156273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49175657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97703 + ... + 98204.

It is an arithmetic number, because the mean of its divisors is an integer number (12342204).

Almost surely, 2^49172657 is an apocalyptic number.

It is an amenable number.

49172657 is a deficient number, since it is larger than the sum of its proper divisors (196159).

49172657 is a wasteful number, since it uses less digits than its factorization.

49172657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196158.

The product of its digits is 105840, while the sum is 41.

The square root of 49172657 is about 7012.3217980923. The cubic root of 49172657 is about 366.3598663199.

The spelling of 49172657 in words is "forty-nine million, one hundred seventy-two thousand, six hundred fifty-seven".