155975680 has 152 divisors (see below), whose sum is σ = 452983968. Its totient is φ = 50331648.

The previous prime is 155975671. The next prime is 155975689. The reversal of 155975680 is 86579551.

It is an interprime number because it is at equal distance from previous prime (155975671) and next prime (155975689).

It is a self number, because there is not a number n which added to its sum of digits gives 155975680.

It is not an unprimeable number, because it can be changed into a prime (155975689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9175032 + ... + 9175048.

Almost surely, 2^155975680 is an apocalyptic number.

155975680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155975680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226491984).

155975680 is an abundant number, since it is smaller than the sum of its proper divisors (297008288).

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

155975680 is an frugal number, since it uses more digits than its factorization.

155975680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 155975680 is about 12489.0223796741. The cubic root of 155975680 is about 538.2932854535.

The spelling of 155975680 in words is "one hundred fifty-five million, nine hundred seventy-five thousand, six hundred eighty".