47525778 has 40 divisors (see below), whose sum is σ = 112763772. Its totient is φ = 14909184.

The previous prime is 47525743. The next prime is 47525791. The reversal of 47525778 is 87752574.

47525778 is a `hidden beast` number, since 4 + 75 + 2 + 577 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46416969 + 1108809 = 6813^2 + 1053^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5875 + ... + 11382.

Almost surely, 2^47525778 is an apocalyptic number.

47525778 is an abundant number, since it is smaller than the sum of its proper divisors (65237994).

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

47525778 is a wasteful number, since it uses less digits than its factorization.

47525778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288 (or 17279 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 47525778 is about 6893.8942550637. The cubic root of 47525778 is about 362.2233240390.

It can be divided in two parts, 47 and 525778, that added together give a triangular number (525825 = T₁₀₂₅).

The spelling of 47525778 in words is "forty-seven million, five hundred twenty-five thousand, seven hundred seventy-eight".