45387019 has 2 divisors, whose sum is σ = 45387020. Its totient is φ = 45387018.

The previous prime is 45386987. The next prime is 45387031. The reversal of 45387019 is 91078354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45387019 - 2⁵ = 45386987 is a prime.

It is a super-2 number, since 2×45387019² = 4119962987412722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45387079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22693509 + 22693510.

It is an arithmetic number, because the mean of its divisors is an integer number (22693510).

Almost surely, 2^45387019 is an apocalyptic number.

45387019 is a deficient number, since it is larger than the sum of its proper divisors (1).

45387019 is an equidigital number, since it uses as much as digits as its factorization.

45387019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 45387019 is about 6736.9888674392. The cubic root of 45387019 is about 356.7061138812.

The spelling of 45387019 in words is "forty-five million, three hundred eighty-seven thousand, nineteen".