49697151 has 16 divisors (see below), whose sum is σ = 76482048. Its totient is φ = 28116000.

The previous prime is 49697147. The next prime is 49697173. The reversal of 49697151 is 15179694.

It is not a de Polignac number, because 49697151 - 2² = 49697147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49697101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9595 + ... + 13836.

It is an arithmetic number, because the mean of its divisors is an integer number (4780128).

Almost surely, 2^49697151 is an apocalyptic number.

49697151 is a deficient number, since it is larger than the sum of its proper divisors (26784897).

49697151 is a wasteful number, since it uses less digits than its factorization.

49697151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23542.

The product of its digits is 68040, while the sum is 42.

The square root of 49697151 is about 7049.6206280906. The cubic root of 49697151 is about 367.6578395524.

The spelling of 49697151 in words is "forty-nine million, six hundred ninety-seven thousand, one hundred fifty-one".