153660545 has 4 divisors (see below), whose sum is σ = 184392660. Its totient is φ = 122928432.

The previous prime is 153660499. The next prime is 153660553. The reversal of 153660545 is 545066351.

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 93876721 + 59783824 = 9689^2 + 7732^2 .

It is a cyclic number.

It is not a de Polignac number, because 153660545 - 2¹⁰ = 153659521 is a prime.

It is a super-2 number, since 2×153660545² = 47223126179394050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15366050 + ... + 15366059.

It is an arithmetic number, because the mean of its divisors is an integer number (46098165).

Almost surely, 2^153660545 is an apocalyptic number.

It is an amenable number.

153660545 is a deficient number, since it is larger than the sum of its proper divisors (30732115).

153660545 is an equidigital number, since it uses as much as digits as its factorization.

153660545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30732114.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 153660545 is about 12395.9890690497. The cubic root of 153660545 is about 535.6167168257.

The spelling of 153660545 in words is "one hundred fifty-three million, six hundred sixty thousand, five hundred forty-five".