155042022 has 8 divisors (see below), whose sum is σ = 310084056. Its totient is φ = 51680672.

The previous prime is 155042009. The next prime is 155042039. The reversal of 155042022 is 220240551.

It is a happy number.

155042022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

155042022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 155042022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12920163 + ... + 12920174.

It is an arithmetic number, because the mean of its divisors is an integer number (38760507).

Almost surely, 2^155042022 is an apocalyptic number.

155042022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155042022 is a wasteful number, since it uses less digits than its factorization.

155042022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25840342.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 155042022 is about 12451.5871277520. The cubic root of 155042022 is about 537.2170749710.

Adding to 155042022 its reverse (220240551), we get a palindrome (375282573).

The spelling of 155042022 in words is "one hundred fifty-five million, forty-two thousand, twenty-two".