155422000 has 40 divisors (see below), whose sum is σ = 375815232. Its totient is φ = 62168000.

The previous prime is 155421983. The next prime is 155422009. The reversal of 155422000 is 224551.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (155422009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36856 + ... + 40855.

Almost surely, 2^155422000 is an apocalyptic number.

155422000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155422000 is an abundant number, since it is smaller than the sum of its proper divisors (220393232).

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

155422000 is an equidigital number, since it uses as much as digits as its factorization.

155422000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77734 (or 77718 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 155422000 is about 12466.8360059800. The cubic root of 155422000 is about 537.6555886337.

Adding to 155422000 its reverse (224551), we get a palindrome (155646551).

The spelling of 155422000 in words is "one hundred fifty-five million, four hundred twenty-two thousand".