155937982 has 4 divisors (see below), whose sum is σ = 233906976. Its totient is φ = 77968990.

The previous prime is 155937961. The next prime is 155937989. The reversal of 155937982 is 289739551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155937989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38984494 + ... + 38984497.

It is an arithmetic number, because the mean of its divisors is an integer number (58476744).

Almost surely, 2^155937982 is an apocalyptic number.

155937982 is a deficient number, since it is larger than the sum of its proper divisors (77968994).

155937982 is an equidigital number, since it uses as much as digits as its factorization.

155937982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77968993.

The product of its digits is 680400, while the sum is 49.

The square root of 155937982 is about 12487.5130430362. The cubic root of 155937982 is about 538.2499149841.

The spelling of 155937982 in words is "one hundred fifty-five million, nine hundred thirty-seven thousand, nine hundred eighty-two".