49115578 has 4 divisors (see below), whose sum is σ = 73673370. Its totient is φ = 24557788.

The previous prime is 49115569. The next prime is 49115587. The reversal of 49115578 is 87551194.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (49115569) and next prime (49115587).

It can be written as a sum of positive squares in only one way, i.e., 33489369 + 15626209 = 5787^2 + 3953^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49115578.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12278893 + ... + 12278896.

Almost surely, 2^49115578 is an apocalyptic number.

49115578 is a deficient number, since it is larger than the sum of its proper divisors (24557792).

49115578 is a wasteful number, since it uses less digits than its factorization.

49115578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24557791.

The product of its digits is 50400, while the sum is 40.

The square root of 49115578 is about 7008.2507089858. The cubic root of 49115578 is about 366.2180561314.

The spelling of 49115578 in words is "forty-nine million, one hundred fifteen thousand, five hundred seventy-eight".