49697159 has 4 divisors (see below), whose sum is σ = 50378016. Its totient is φ = 49016304.

The previous prime is 49697147. The next prime is 49697173. The reversal of 49697159 is 95179694.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49697159 - 2⁴ = 49697143 is a prime.

It is a super-2 number, since 2×49697159² = 4939615225342562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49697119) 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, 340319 + ... + 340464.

It is an arithmetic number, because the mean of its divisors is an integer number (12594504).

Almost surely, 2^49697159 is an apocalyptic number.

49697159 is a deficient number, since it is larger than the sum of its proper divisors (680857).

49697159 is an equidigital number, since it uses as much as digits as its factorization.

49697159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680856.

The product of its digits is 612360, while the sum is 50.

The square root of 49697159 is about 7049.6211954970. The cubic root of 49697159 is about 367.6578592803.

The spelling of 49697159 in words is "forty-nine million, six hundred ninety-seven thousand, one hundred fifty-nine".