201557052 has 24 divisors (see below), whose sum is σ = 522555600. Its totient is φ = 67185648.

The previous prime is 201557051. The next prime is 201557053. The reversal of 201557052 is 250755102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201557051) and next prime (201557053).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201557051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933027 + ... + 933242.

It is an arithmetic number, because the mean of its divisors is an integer number (21773150).

Almost surely, 2^201557052 is an apocalyptic number.

It is an amenable number.

201557052 is an abundant number, since it is smaller than the sum of its proper divisors (320998548).

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

201557052 is a wasteful number, since it uses less digits than its factorization.

201557052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866282 (or 1866274 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 201557052 is about 14197.0789953427. The cubic root of 201557052 is about 586.3172421329.

The spelling of 201557052 in words is "two hundred one million, five hundred fifty-seven thousand, fifty-two".