201155004 has 36 divisors (see below), whose sum is σ = 515447296. Its totient is φ = 66132288.

The previous prime is 201154973. The next prime is 201155021. The reversal of 201155004 is 400551102.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35644 + ... + 40899.

Almost surely, 2^201155004 is an apocalyptic number.

It is an amenable number.

201155004 is an abundant number, since it is smaller than the sum of its proper divisors (314292292).

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

201155004 is a wasteful number, since it uses less digits than its factorization.

201155004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76626 (or 76621 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 201155004 is about 14182.9123948504. The cubic root of 201155004 is about 585.9271382189.

The spelling of 201155004 in words is "two hundred one million, one hundred fifty-five thousand, four".