155606949 has 12 divisors (see below), whose sum is σ = 232016512. Its totient is φ = 100391400.

The previous prime is 155606923. The next prime is 155606959. The reversal of 155606949 is 949606551.

It is a happy number.

155606949 is a `hidden beast` number, since 1 + 556 + 0 + 6 + 94 + 9 = 666.

It is not a de Polignac number, because 155606949 - 2⁵ = 155606917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155606959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278587 + ... + 279144.

Almost surely, 2^155606949 is an apocalyptic number.

It is an amenable number.

155606949 is a deficient number, since it is larger than the sum of its proper divisors (76409563).

155606949 is a wasteful number, since it uses less digits than its factorization.

155606949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557768 (or 557765 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 155606949 is about 12474.2514404673. The cubic root of 155606949 is about 537.8687704786.

The spelling of 155606949 in words is "one hundred fifty-five million, six hundred six thousand, nine hundred forty-nine".