49154157 has 36 divisors (see below), whose sum is σ = 81447444. Its totient is φ = 28454400.

The previous prime is 49154143. The next prime is 49154201. The reversal of 49154157 is 75145194.

49154157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 10850436 + 38303721 = 3294^2 + 6189^2 .

It is not a de Polignac number, because 49154157 - 2¹⁴ = 49137773 is a prime.

It is a super-2 number, since 2×49154157² = 4832262300761298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49154107) 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 35 ways as a sum of consecutive naturals, for example, 24907 + ... + 26807.

It is an arithmetic number, because the mean of its divisors is an integer number (2262429).

Almost surely, 2^49154157 is an apocalyptic number.

It is an amenable number.

49154157 is a deficient number, since it is larger than the sum of its proper divisors (32293287).

49154157 is a wasteful number, since it uses less digits than its factorization.

49154157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1934 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 49154157 is about 7011.0025673936. The cubic root of 49154157 is about 366.3139159341.

Subtracting from 49154157 its sum of digits (36), we obtain a square (49154121 = 7011²).

The spelling of 49154157 in words is "forty-nine million, one hundred fifty-four thousand, one hundred fifty-seven".