49158657 has 14 divisors (see below), whose sum is σ = 73705362. Its totient is φ = 32771952.

The previous prime is 49158617. The next prime is 49158677. The reversal of 49158657 is 75685194.

It can be written as a sum of positive squares in only one way, i.e., 44836416 + 4322241 = 6696^2 + 2079^2 .

It is not a de Polignac number, because 49158657 - 2¹⁴ = 49142273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49158617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 32988 + ... + 34445.

Almost surely, 2^49158657 is an apocalyptic number.

It is an amenable number.

49158657 is a deficient number, since it is larger than the sum of its proper divisors (24546705).

49158657 is an frugal number, since it uses more digits than its factorization.

49158657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67451 (or 67436 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 49158657 is about 7011.3234841933. The cubic root of 49158657 is about 366.3250941160.

The spelling of 49158657 in words is "forty-nine million, one hundred fifty-eight thousand, six hundred fifty-seven".