55150146 has 40 divisors (see below), whose sum is σ = 124124220. Its totient is φ = 18302112.

The previous prime is 55150133. The next prime is 55150153. The reversal of 55150146 is 64105155.

It is a happy number.

55150146 is a `hidden beast` number, since 5 + 515 + 0 + 146 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53802225 + 1347921 = 7335^2 + 1161^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44260 + ... + 45488.

Almost surely, 2^55150146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55150146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62062110).

55150146 is an abundant number, since it is smaller than the sum of its proper divisors (68974074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55150146 is a wasteful number, since it uses less digits than its factorization.

55150146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55150146 is about 7426.3144291095. The cubic root of 55150146 is about 380.6409911018.

The spelling of 55150146 in words is "fifty-five million, one hundred fifty thousand, one hundred forty-six".