22557019 has 2 divisors, whose sum is σ = 22557020. Its totient is φ = 22557018.

The previous prime is 22557001. The next prime is 22557023. The reversal of 22557019 is 91075522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22557019 is a prime.

It is a super-2 number, since 2×22557019² = 1017638212332722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22527019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11278509 + 11278510.

It is an arithmetic number, because the mean of its divisors is an integer number (11278510).

Almost surely, 2^22557019 is an apocalyptic number.

22557019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22557019 is an equidigital number, since it uses as much as digits as its factorization.

22557019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 22557019 is about 4749.4230175886. The cubic root of 22557019 is about 282.5490827605.

The spelling of 22557019 in words is "twenty-two million, five hundred fifty-seven thousand, nineteen".