901961 has 4 divisors (see below), whose sum is σ = 912912. Its totient is φ = 891012.

The previous prime is 901937. The next prime is 901963. The reversal of 901961 is 169109.

901961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169109 = 263 ⋅643.

It is a cyclic number.

It is not a de Polignac number, because 901961 - 2¹⁰ = 900937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 901961.

It is not an unprimeable number, because it can be changed into a prime (901963) 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, 5351 + ... + 5516.

It is an arithmetic number, because the mean of its divisors is an integer number (228228).

2⁹⁰¹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

901961 is a deficient number, since it is larger than the sum of its proper divisors (10951).

901961 is a wasteful number, since it uses less digits than its factorization.

901961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10950.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 901961 is about 949.7162734206. The cubic root of 901961 is about 96.6190107284.

The spelling of 901961 in words is "nine hundred one thousand, nine hundred sixty-one".