151732561 has 4 divisors (see below), whose sum is σ = 151958692. Its totient is φ = 151506432.

The previous prime is 151732519. The next prime is 151732571. The reversal of 151732561 is 165237151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64496961 + 87235600 = 8031^2 + 9340^2 .

It is a cyclic number.

It is not a de Polignac number, because 151732561 - 2¹³ = 151724369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151732571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112056 + ... + 113401.

It is an arithmetic number, because the mean of its divisors is an integer number (37989673).

Almost surely, 2^151732561 is an apocalyptic number.

It is an amenable number.

151732561 is a deficient number, since it is larger than the sum of its proper divisors (226131).

151732561 is an equidigital number, since it uses as much as digits as its factorization.

151732561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226130.

The product of its digits is 6300, while the sum is 31.

The square root of 151732561 is about 12317.9771472430. The cubic root of 151732561 is about 533.3671483334.

The spelling of 151732561 in words is "one hundred fifty-one million, seven hundred thirty-two thousand, five hundred sixty-one".