155664547 has 16 divisors (see below), whose sum is σ = 167040000. Its totient is φ = 144738720.

The previous prime is 155664539. The next prime is 155664557. The reversal of 155664547 is 745466551.

It is a cyclic number.

It is not a de Polignac number, because 155664547 - 2³ = 155664539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155664557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311704 + ... + 312202.

It is an arithmetic number, because the mean of its divisors is an integer number (10440000).

Almost surely, 2^155664547 is an apocalyptic number.

155664547 is a deficient number, since it is larger than the sum of its proper divisors (11375453).

155664547 is a wasteful number, since it uses less digits than its factorization.

155664547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its digits is 504000, while the sum is 43.

The square root of 155664547 is about 12476.5599024731. The cubic root of 155664547 is about 537.9351264351.

The spelling of 155664547 in words is "one hundred fifty-five million, six hundred sixty-four thousand, five hundred forty-seven".