155222408 has 32 divisors (see below), whose sum is σ = 321084000. Its totient is φ = 69759360.

The previous prime is 155222357. The next prime is 155222447. The reversal of 155222408 is 804222551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078 + ... + 17741.

It is an arithmetic number, because the mean of its divisors is an integer number (10033875).

Almost surely, 2^155222408 is an apocalyptic number.

It is an amenable number.

155222408 is an abundant number, since it is smaller than the sum of its proper divisors (165861592).

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

155222408 is a wasteful number, since it uses less digits than its factorization.

155222408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19925 (or 19921 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 155222408 is about 12458.8285163574. The cubic root of 155222408 is about 537.4253386832.

Adding to 155222408 its reverse (804222551), we get a palindrome (959444959).

The spelling of 155222408 in words is "one hundred fifty-five million, two hundred twenty-two thousand, four hundred eight".