2501819 has 2 divisors, whose sum is σ = 2501820. Its totient is φ = 2501818.

The previous prime is 2501813. The next prime is 2501833. The reversal of 2501819 is 9181052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2501819 - 2⁴ = 2501803 is a prime.

It is a super-2 number, since 2×2501819² = 12518196617522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2501813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250909 + 1250910.

It is an arithmetic number, because the mean of its divisors is an integer number (1250910).

2^2501819 is an apocalyptic number.

2501819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501819 is an equidigital number, since it uses as much as digits as its factorization.

2501819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2501819 is about 1581.7139437964. The cubic root of 2501819 is about 135.7537896872.

The spelling of 2501819 in words is "two million, five hundred one thousand, eight hundred nineteen".