2154566047 has 12 divisors (see below), whose sum is σ = 2287143000. Its totient is φ = 2029310352.

The previous prime is 2154566021. The next prime is 2154566059. The reversal of 2154566047 is 7406654512.

It is a happy number.

It is not a de Polignac number, because 2154566047 - 2³¹ = 7082399 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 (2154566087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45204 + ... + 79702.

It is an arithmetic number, because the mean of its divisors is an integer number (190595250).

Almost surely, 2^2154566047 is an apocalyptic number.

2154566047 is a deficient number, since it is larger than the sum of its proper divisors (132576953).

2154566047 is a wasteful number, since it uses less digits than its factorization.

2154566047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34710 (or 34691 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2154566047 is about 46417.3033146046. The cubic root of 2154566047 is about 1291.5759132926.

The spelling of 2154566047 in words is "two billion, one hundred fifty-four million, five hundred sixty-six thousand, forty-seven".