155022030 has 48 divisors (see below), whose sum is σ = 403734240. Its totient is φ = 41269824.

The previous prime is 155022019. The next prime is 155022037. The reversal of 155022030 is 30220551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 155021994 and 155022012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155022037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74484 + ... + 76536.

It is an arithmetic number, because the mean of its divisors is an integer number (8411130).

Almost surely, 2^155022030 is an apocalyptic number.

155022030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155022030 is an abundant number, since it is smaller than the sum of its proper divisors (248712210).

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

155022030 is a wasteful number, since it uses less digits than its factorization.

155022030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 155022030 is about 12450.7843126447. The cubic root of 155022030 is about 537.1939833703.

Adding to 155022030 its reverse (30220551), we get a palindrome (185242581).

The spelling of 155022030 in words is "one hundred fifty-five million, twenty-two thousand, thirty".