49515442 has 4 divisors (see below), whose sum is σ = 74273166. Its totient is φ = 24757720.

The previous prime is 49515391. The next prime is 49515443. The reversal of 49515442 is 24451594.

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

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 4879681 = 6681^2 + 2209^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49515398 and 49515407.

It is not an unprimeable number, because it can be changed into a prime (49515443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12378859 + ... + 12378862.

Almost surely, 2^49515442 is an apocalyptic number.

49515442 is a deficient number, since it is larger than the sum of its proper divisors (24757724).

49515442 is a wasteful number, since it uses less digits than its factorization.

49515442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24757723.

The product of its digits is 28800, while the sum is 34.

The square root of 49515442 is about 7036.7209693152. The cubic root of 49515442 is about 367.2091999742.

The spelling of 49515442 in words is "forty-nine million, five hundred fifteen thousand, four hundred forty-two".