901651 has 4 divisors (see below), whose sum is σ = 907552. Its totient is φ = 895752.

The previous prime is 901643. The next prime is 901657. The reversal of 901651 is 156109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 901651 - 2³ = 901643 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2715 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (226888).

2⁹⁰¹⁶⁵¹ is an apocalyptic number.

901651 is a deficient number, since it is larger than the sum of its proper divisors (5901).

901651 is a wasteful number, since it uses less digits than its factorization.

901651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 901651 is about 949.5530527569. The cubic root of 901651 is about 96.6079402847.

The spelling of 901651 in words is "nine hundred one thousand, six hundred fifty-one".