152205561 has 20 divisors (see below), whose sum is σ = 239338000. Its totient is φ = 96128856.

The previous prime is 152205551. The next prime is 152205569. The reversal of 152205561 is 165502251.

152205561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152205561 - 2⁹ = 152205049 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152205569) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47911 + ... + 50988.

It is an arithmetic number, because the mean of its divisors is an integer number (11966900).

Almost surely, 2^152205561 is an apocalyptic number.

It is an amenable number.

152205561 is a deficient number, since it is larger than the sum of its proper divisors (87132439).

152205561 is an equidigital number, since it uses as much as digits as its factorization.

152205561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98930 (or 98921 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 152205561 is about 12337.1617886773. The cubic root of 152205561 is about 533.9208000203.

The spelling of 152205561 in words is "one hundred fifty-two million, two hundred five thousand, five hundred sixty-one".