361610021 has 4 divisors (see below), whose sum is σ = 364457472. Its totient is φ = 358762572.

The previous prime is 361610003. The next prime is 361610059. The reversal of 361610021 is 120016163.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361610021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 361609975 and 361610002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361610321) 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, 1423535 + ... + 1423788.

It is an arithmetic number, because the mean of its divisors is an integer number (91114368).

Almost surely, 2^361610021 is an apocalyptic number.

It is an amenable number.

361610021 is a deficient number, since it is larger than the sum of its proper divisors (2847451).

361610021 is a wasteful number, since it uses less digits than its factorization.

361610021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847450.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 361610021 is about 19016.0464082311. The cubic root of 361610021 is about 712.4375788549.

Adding to 361610021 its reverse (120016163), we get a palindrome (481626184).

The spelling of 361610021 in words is "three hundred sixty-one million, six hundred ten thousand, twenty-one".