49771278 has 24 divisors (see below), whose sum is σ = 108630288. Its totient is φ = 16468512.

The previous prime is 49771259. The next prime is 49771283. The reversal of 49771278 is 87217794.

It is a happy number.

It is a super-2 number, since 2×49771278² = 4954360227506568, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7626 + ... + 12557.

It is an arithmetic number, because the mean of its divisors is an integer number (4526262).

Almost surely, 2^49771278 is an apocalyptic number.

49771278 is an abundant number, since it is smaller than the sum of its proper divisors (58859010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49771278 is a wasteful number, since it uses less digits than its factorization.

49771278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20328 (or 20325 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 49771278 is about 7054.8761860149. The cubic root of 49771278 is about 367.8405450878.

The spelling of 49771278 in words is "forty-nine million, seven hundred seventy-one thousand, two hundred seventy-eight".