45397987 has 2 divisors, whose sum is σ = 45397988. Its totient is φ = 45397986.

The previous prime is 45397967. The next prime is 45398027. The reversal of 45397987 is 78979354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45397987 - 2¹¹ = 45395939 is a prime.

It is not a weakly prime, because it can be changed into another prime (45397907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22698993 + 22698994.

It is an arithmetic number, because the mean of its divisors is an integer number (22698994).

Almost surely, 2^45397987 is an apocalyptic number.

45397987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45397987 is an equidigital number, since it uses as much as digits as its factorization.

45397987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 45397987 is about 6737.8028317843. The cubic root of 45397987 is about 356.7348448388.

The spelling of 45397987 in words is "forty-five million, three hundred ninety-seven thousand, nine hundred eighty-seven".