155199454 has 8 divisors (see below), whose sum is σ = 240308928. Its totient is φ = 75096480.

The previous prime is 155199449. The next prime is 155199487. The reversal of 155199454 is 454991551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 155199454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251547 + ... + 1251670.

It is an arithmetic number, because the mean of its divisors is an integer number (30038616).

Almost surely, 2^155199454 is an apocalyptic number.

155199454 is a deficient number, since it is larger than the sum of its proper divisors (85109474).

155199454 is a wasteful number, since it uses less digits than its factorization.

155199454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503250.

The product of its digits is 162000, while the sum is 43.

The square root of 155199454 is about 12457.9072881443. The cubic root of 155199454 is about 537.3988462253.

The spelling of 155199454 in words is "one hundred fifty-five million, one hundred ninety-nine thousand, four hundred fifty-four".