315054878 has 4 divisors (see below), whose sum is σ = 472582320. Its totient is φ = 157527438.

The previous prime is 315054877. The next prime is 315054881. The reversal of 315054878 is 878450513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878450513 = 29 ⋅30291397.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315054877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78763718 + ... + 78763721.

It is an arithmetic number, because the mean of its divisors is an integer number (118145580).

Almost surely, 2^315054878 is an apocalyptic number.

315054878 is a deficient number, since it is larger than the sum of its proper divisors (157527442).

315054878 is a wasteful number, since it uses less digits than its factorization.

315054878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157527441.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 315054878 is about 17749.7852944761. The cubic root of 315054878 is about 680.4487219959.

The spelling of 315054878 in words is "three hundred fifteen million, fifty-four thousand, eight hundred seventy-eight".