361921 has 8 divisors (see below), whose sum is σ = 417600. Its totient is φ = 307248.

The previous prime is 361919. The next prime is 361927. The reversal of 361921 is 129163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 361921 - 2¹ = 361919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 361892 and 361901.

It is not an unprimeable number, because it can be changed into a prime (361927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 870 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (52200).

2³⁶¹⁹²¹ is an apocalyptic number.

It is an amenable number.

361921 is a deficient number, since it is larger than the sum of its proper divisors (55679).

361921 is a wasteful number, since it uses less digits than its factorization.

361921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

The product of its digits is 324, while the sum is 22.

The square root of 361921 is about 601.5987034560. The cubic root of 361921 is about 71.2641748755.

The spelling of 361921 in words is "three hundred sixty-one thousand, nine hundred twenty-one".