155420622 has 24 divisors (see below), whose sum is σ = 384851376. Its totient is φ = 44405856.

The previous prime is 155420621. The next prime is 155420623. The reversal of 155420622 is 226024551.

155420622 is a `hidden beast` number, since 15 + 5 + 4 + 20 + 622 = 666.

155420622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155420621) and next prime (155420623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155420621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616623 + ... + 616874.

It is an arithmetic number, because the mean of its divisors is an integer number (16035474).

Almost surely, 2^155420622 is an apocalyptic number.

155420622 is an abundant number, since it is smaller than the sum of its proper divisors (229430754).

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

155420622 is a wasteful number, since it uses less digits than its factorization.

155420622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233512 (or 1233509 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 155420622 is about 12466.7807392286. The cubic root of 155420622 is about 537.6539996446.

The spelling of 155420622 in words is "one hundred fifty-five million, four hundred twenty thousand, six hundred twenty-two".