155882049 has 4 divisors (see below), whose sum is σ = 207842736. Its totient is φ = 103921364.

The previous prime is 155882039. The next prime is 155882053. The reversal of 155882049 is 940288551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940288551 = 3 ⋅313429517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155882049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155882049.

It is not an unprimeable number, because it can be changed into a prime (155882039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25980339 + ... + 25980344.

It is an arithmetic number, because the mean of its divisors is an integer number (51960684).

Almost surely, 2^155882049 is an apocalyptic number.

It is an amenable number.

155882049 is a deficient number, since it is larger than the sum of its proper divisors (51960687).

155882049 is an equidigital number, since it uses as much as digits as its factorization.

155882049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51960686.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 155882049 is about 12485.2732849546. The cubic root of 155882049 is about 538.1855527884.

The spelling of 155882049 in words is "one hundred fifty-five million, eight hundred eighty-two thousand, forty-nine".