2154525078 has 32 divisors (see below), whose sum is σ = 4348270080. Its totient is φ = 711662400.

The previous prime is 2154525047. The next prime is 2154525089. The reversal of 2154525078 is 8705254512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395026 + ... + 400442.

It is an arithmetic number, because the mean of its divisors is an integer number (135883440).

Almost surely, 2^2154525078 is an apocalyptic number.

2154525078 is an abundant number, since it is smaller than the sum of its proper divisors (2193745002).

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

2154525078 is a wasteful number, since it uses less digits than its factorization.

2154525078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012.

The product of its (nonzero) digits is 112000, while the sum is 39.

The square root of 2154525078 is about 46416.8620007859. The cubic root of 2154525078 is about 1291.5677268167.

The spelling of 2154525078 in words is "two billion, one hundred fifty-four million, five hundred twenty-five thousand, seventy-eight".