155474450 has 24 divisors (see below), whose sum is σ = 291306132. Its totient is φ = 61733120.

The previous prime is 155474443. The next prime is 155474467. The reversal of 155474450 is 54474551.

It can be written as a sum of positive squares in 6 ways, for example, as 15217801 + 140256649 = 3901^2 + 11843^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155474450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4499 + ... + 18198.

Almost surely, 2^155474450 is an apocalyptic number.

155474450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155474450 is a deficient number, since it is larger than the sum of its proper divisors (135831682).

155474450 is a wasteful number, since it uses less digits than its factorization.

155474450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22846 (or 22841 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 155474450 is about 12468.9394095889. The cubic root of 155474450 is about 537.7160624062.

The spelling of 155474450 in words is "one hundred fifty-five million, four hundred seventy-four thousand, four hundred fifty".