152516661 has 16 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 92334320.

The previous prime is 152516659. The next prime is 152516729. The reversal of 152516661 is 166615251.

It is a cyclic number.

It is not a de Polignac number, because 152516661 - 2¹ = 152516659 is a prime.

It is a super-2 number, since 2×152516661² = 46522663765177842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152516261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38470 + ... + 42248.

It is an arithmetic number, because the mean of its divisors is an integer number (13880160).

Almost surely, 2^152516661 is an apocalyptic number.

152516661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152516661 is a deficient number, since it is larger than the sum of its proper divisors (69565899).

152516661 is a wasteful number, since it uses less digits than its factorization.

152516661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016.

The product of its digits is 10800, while the sum is 33.

The square root of 152516661 is about 12349.7636009763. The cubic root of 152516661 is about 534.2843209493.

It can be divided in two parts, 15251 and 6661, that added together give a palindrome (21912).

The spelling of 152516661 in words is "one hundred fifty-two million, five hundred sixteen thousand, six hundred sixty-one".