1505666001 has 64 divisors (see below), whose sum is σ = 2554675200. Its totient is φ = 769305600.

The previous prime is 1505665999. The next prime is 1505666003. The reversal of 1505666001 is 1006665051.

It is an interprime number because it is at equal distance from previous prime (1505665999) and next prime (1505666003).

It is not a de Polignac number, because 1505666001 - 2¹ = 1505665999 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1505666001.

It is not an unprimeable number, because it can be changed into a prime (1505666003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 505645 + ... + 508613.

It is an arithmetic number, because the mean of its divisors is an integer number (39916800).

Almost surely, 2^1505666001 is an apocalyptic number.

It is an amenable number.

1505666001 is a deficient number, since it is larger than the sum of its proper divisors (1049009199).

1505666001 is a wasteful number, since it uses less digits than its factorization.

1505666001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1505666001 is about 38802.9122747249. The cubic root of 1505666001 is about 1146.1537542426.

The spelling of 1505666001 in words is "one billion, five hundred five million, six hundred sixty-six thousand, one".