155256782 has 4 divisors (see below), whose sum is σ = 232885176. Its totient is φ = 77628390.

The previous prime is 155256763. The next prime is 155256799. The reversal of 155256782 is 287652551.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38814194 + ... + 38814197.

It is an arithmetic number, because the mean of its divisors is an integer number (58221294).

Almost surely, 2^155256782 is an apocalyptic number.

155256782 is a deficient number, since it is larger than the sum of its proper divisors (77628394).

155256782 is an equidigital number, since it uses as much as digits as its factorization.

155256782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77628393.

The product of its digits is 168000, while the sum is 41.

The square root of 155256782 is about 12460.2079436902. The cubic root of 155256782 is about 537.4650066997.

The spelling of 155256782 in words is "one hundred fifty-five million, two hundred fifty-six thousand, seven hundred eighty-two".