5921618 has 4 divisors (see below), whose sum is σ = 8882430. Its totient is φ = 2960808.

The previous prime is 5921599. The next prime is 5921639. The reversal of 5921618 is 8161295.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8161295 = 5 ⋅1632259.

It can be written as a sum of positive squares in only one way, i.e., 4464769 + 1456849 = 2113^2 + 1207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480403 + ... + 1480406.

Almost surely, 2^5921618 is an apocalyptic number.

5921618 is a deficient number, since it is larger than the sum of its proper divisors (2960812).

5921618 is a wasteful number, since it uses less digits than its factorization.

5921618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960811.

The product of its digits is 4320, while the sum is 32.

The square root of 5921618 is about 2433.4374863555. The cubic root of 5921618 is about 180.9173131468.

The spelling of 5921618 in words is "five million, nine hundred twenty-one thousand, six hundred eighteen".