152640561 has 8 divisors (see below), whose sum is σ = 206097280. Its totient is φ = 100472112.

The previous prime is 152640533. The next prime is 152640563. The reversal of 152640561 is 165046251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 152640561 - 2⁹ = 152640049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152640563) 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 7 ways as a sum of consecutive naturals, for example, 321790 + ... + 322263.

It is an arithmetic number, because the mean of its divisors is an integer number (25762160).

Almost surely, 2^152640561 is an apocalyptic number.

It is an amenable number.

152640561 is a deficient number, since it is larger than the sum of its proper divisors (53456719).

152640561 is an equidigital number, since it uses as much as digits as its factorization.

152640561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644135.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 152640561 is about 12354.7788729706. The cubic root of 152640561 is about 534.4289606875.

The spelling of 152640561 in words is "one hundred fifty-two million, six hundred forty thousand, five hundred sixty-one".