155377982 has 4 divisors (see below), whose sum is σ = 233066976. Its totient is φ = 77688990.

The previous prime is 155377973. The next prime is 155377993. The reversal of 155377982 is 289773551.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38844494 + ... + 38844497.

It is an arithmetic number, because the mean of its divisors is an integer number (58266744).

Almost surely, 2^155377982 is an apocalyptic number.

155377982 is a deficient number, since it is larger than the sum of its proper divisors (77688994).

155377982 is an equidigital number, since it uses as much as digits as its factorization.

155377982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77688993.

The product of its digits is 529200, while the sum is 47.

The square root of 155377982 is about 12465.0704771373. The cubic root of 155377982 is about 537.6048262828.

The spelling of 155377982 in words is "one hundred fifty-five million, three hundred seventy-seven thousand, nine hundred eighty-two".