155276660 has 48 divisors (see below), whose sum is σ = 406546560. Its totient is φ = 48397440.

The previous prime is 155276651. The next prime is 155276663. The reversal of 155276660 is 66672551.

It is a super-2 number, since 2×155276660² = 48221682281511200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155276663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48875 + ... + 51954.

It is an arithmetic number, because the mean of its divisors is an integer number (8469720).

Almost surely, 2^155276660 is an apocalyptic number.

155276660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155276660 is an abundant number, since it is smaller than the sum of its proper divisors (251269900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155276660 is a wasteful number, since it uses less digits than its factorization.

155276660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100856 (or 100854 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 155276660 is about 12461.0055774002. The cubic root of 155276660 is about 537.4879434829.

The spelling of 155276660 in words is "one hundred fifty-five million, two hundred seventy-six thousand, six hundred sixty".