30155601 has 16 divisors (see below), whose sum is σ = 46078848. Its totient is φ = 17184000.

The previous prime is 30155597. The next prime is 30155627. The reversal of 30155601 is 10655103.

It is a happy number.

It is not a de Polignac number, because 30155601 - 2² = 30155597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30155101) 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 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 10211.

It is an arithmetic number, because the mean of its divisors is an integer number (2879928).

Almost surely, 2^30155601 is an apocalyptic number.

It is an amenable number.

30155601 is a deficient number, since it is larger than the sum of its proper divisors (15923247).

30155601 is a wasteful number, since it uses less digits than its factorization.

30155601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 30155601 is about 5491.4115671656. The cubic root of 30155601 is about 311.2595339090.

The spelling of 30155601 in words is "thirty million, one hundred fifty-five thousand, six hundred one".