550138154 has 4 divisors (see below), whose sum is σ = 825207234. Its totient is φ = 275069076.

The previous prime is 550138111. The next prime is 550138189. The reversal of 550138154 is 451831055.

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., 483340225 + 66797929 = 21985^2 + 8173^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 550138154.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137534537 + ... + 137534540.

Almost surely, 2^550138154 is an apocalyptic number.

550138154 is a deficient number, since it is larger than the sum of its proper divisors (275069080).

550138154 is a wasteful number, since it uses less digits than its factorization.

550138154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275069079.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 550138154 is about 23455.0240673507. The cubic root of 550138154 is about 819.3898663792.

The spelling of 550138154 in words is "five hundred fifty million, one hundred thirty-eight thousand, one hundred fifty-four".