153020645 has 8 divisors (see below), whose sum is σ = 185250456. Its totient is φ = 121332736.

The previous prime is 153020599. The next prime is 153020657. The reversal of 153020645 is 546020351.

It can be written as a sum of positive squares in 4 ways, for example, as 4351396 + 148669249 = 2086^2 + 12193^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 153020645 - 2²⁰ = 151972069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134852 + ... + 135981.

It is an arithmetic number, because the mean of its divisors is an integer number (23156307).

Almost surely, 2^153020645 is an apocalyptic number.

It is an amenable number.

153020645 is a deficient number, since it is larger than the sum of its proper divisors (32229811).

153020645 is a wasteful number, since it uses less digits than its factorization.

153020645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270951.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 153020645 is about 12370.1513733665. The cubic root of 153020645 is about 534.8721795551.

Adding to 153020645 its reverse (546020351), we get a palindrome (699040996).

The spelling of 153020645 in words is "one hundred fifty-three million, twenty thousand, six hundred forty-five".