45429521 has 2 divisors, whose sum is σ = 45429522. Its totient is φ = 45429520.

The previous prime is 45429493. The next prime is 45429547. The reversal of 45429521 is 12592454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30691600 + 14737921 = 5540^2 + 3839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45429521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45429581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22714760 + 22714761.

It is an arithmetic number, because the mean of its divisors is an integer number (22714761).

Almost surely, 2^45429521 is an apocalyptic number.

It is an amenable number.

45429521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45429521 is an equidigital number, since it uses as much as digits as its factorization.

45429521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 45429521 is about 6740.1425059119. The cubic root of 45429521 is about 356.8174231917.

The spelling of 45429521 in words is "forty-five million, four hundred twenty-nine thousand, five hundred twenty-one".