252391154 has 4 divisors (see below), whose sum is σ = 378586734. Its totient is φ = 126195576.

The previous prime is 252391093. The next prime is 252391169. The reversal of 252391154 is 451193252.

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

It can be written as a sum of positive squares in only one way, i.e., 205262929 + 47128225 = 14327^2 + 6865^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 252391154.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63097787 + ... + 63097790.

Almost surely, 2^252391154 is an apocalyptic number.

252391154 is a deficient number, since it is larger than the sum of its proper divisors (126195580).

252391154 is a wasteful number, since it uses less digits than its factorization.

252391154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126195579.

The product of its digits is 10800, while the sum is 32.

The square root of 252391154 is about 15886.8232822047. The cubic root of 252391154 is about 631.9625989323.

The spelling of 252391154 in words is "two hundred fifty-two million, three hundred ninety-one thousand, one hundred fifty-four".