45521911 has 2 divisors, whose sum is σ = 45521912. Its totient is φ = 45521910.

The previous prime is 45521893. The next prime is 45521923. The reversal of 45521911 is 11912554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45521911 - 2⁷ = 45521783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45521911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45521941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22760955 + 22760956.

It is an arithmetic number, because the mean of its divisors is an integer number (22760956).

Almost surely, 2^45521911 is an apocalyptic number.

45521911 is a deficient number, since it is larger than the sum of its proper divisors (1).

45521911 is an equidigital number, since it uses as much as digits as its factorization.

45521911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 28.

The square root of 45521911 is about 6746.9927375091. The cubic root of 45521911 is about 357.0591458889.

Subtracting from 45521911 its product of digits (1800), we obtain a triangular number (45520111 = T₉₅₄₁).

It can be divided in two parts, 455 and 21911, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 45521911 in words is "forty-five million, five hundred twenty-one thousand, nine hundred eleven".