155630449 has 8 divisors (see below), whose sum is σ = 168073920. Its totient is φ = 143254416.

The previous prime is 155630441. The next prime is 155630479. The reversal of 155630449 is 944036551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155630449 - 2³ = 155630441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155630441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12007 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (21009240).

Almost surely, 2^155630449 is an apocalyptic number.

It is an amenable number.

155630449 is a deficient number, since it is larger than the sum of its proper divisors (12443471).

155630449 is a wasteful number, since it uses less digits than its factorization.

155630449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33719.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 155630449 is about 12475.1933451951. The cubic root of 155630449 is about 537.8958457045.

The spelling of 155630449 in words is "one hundred fifty-five million, six hundred thirty thousand, four hundred forty-nine".