915002001 has 15 divisors (see below), whose sum is σ = 1367261643. Its totient is φ = 609819840.

The previous prime is 915001991. The next prime is 915002003. The reversal of 915002001 is 100200519.

The square root of 915002001 is 30249.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 686387601 + 228614400 = 26199^2 + 15120^2 .

It is not a de Polignac number, because 915002001 - 2¹³ = 914993809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (915002003) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 270561 + ... + 273921.

Almost surely, 2^915002001 is an apocalyptic number.

915002001 is the 30249-th square number.

915002001 is the 15125-th centered octagonal number.

It is an amenable number.

915002001 is a deficient number, since it is larger than the sum of its proper divisors (452259642).

915002001 is an frugal number, since it uses more digits than its factorization.

915002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734 (or 3364 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The cubic root of 915002001 is about 970.8243960463.

The spelling of 915002001 in words is "nine hundred fifteen million, two thousand, one".