153033661 has 6 divisors (see below), whose sum is σ = 168210686. Its totient is φ = 139121400.

The previous prime is 153033659. The next prime is 153033703. The reversal of 153033661 is 166330351.

It can be written as a sum of positive squares in only one way, i.e., 152053561 + 980100 = 12331^2 + 990^2 .

It is not a de Polignac number, because 153033661 - 2¹ = 153033659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153033641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632250 + ... + 632491.

Almost surely, 2^153033661 is an apocalyptic number.

153033661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

153033661 is a deficient number, since it is larger than the sum of its proper divisors (15177025).

153033661 is a wasteful number, since it uses less digits than its factorization.

153033661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264763 (or 1264752 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 153033661 is about 12370.6774673015. The cubic root of 153033661 is about 534.8873446088.

The spelling of 153033661 in words is "one hundred fifty-three million, thirty-three thousand, six hundred sixty-one".