1551066564 has 24 divisors (see below), whose sum is σ = 3643127488. Its totient is φ = 513597600.

The previous prime is 1551066541. The next prime is 1551066611. The reversal of 1551066564 is 4656601551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426187 + ... + 429810.

Almost surely, 2^1551066564 is an apocalyptic number.

It is an amenable number.

1551066564 is an abundant number, since it is smaller than the sum of its proper divisors (2092060924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551066564 is a wasteful number, since it uses less digits than its factorization.

1551066564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856155 (or 856153 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1551066564 is about 39383.5824170428. The cubic root of 1551066564 is about 1157.5599134290.

The spelling of 1551066564 in words is "one billion, five hundred fifty-one million, sixty-six thousand, five hundred sixty-four".