1551375066 has 16 divisors (see below), whose sum is σ = 3103301664. Its totient is φ = 517033104.

The previous prime is 1551375053. The next prime is 1551375071. The reversal of 1551375066 is 6605731551.

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, 19680 + ... + 59076.

It is an arithmetic number, because the mean of its divisors is an integer number (193956354).

Almost surely, 2^1551375066 is an apocalyptic number.

1551375066 is an abundant number, since it is smaller than the sum of its proper divisors (1551926598).

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

1551375066 is a wasteful number, since it uses less digits than its factorization.

1551375066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45965.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 1551375066 is about 39387.4988543319. The cubic root of 1551375066 is about 1157.6366532851.

The spelling of 1551375066 in words is "one billion, five hundred fifty-one million, three hundred seventy-five thousand, sixty-six".