45615551 has 2 divisors, whose sum is σ = 45615552. Its totient is φ = 45615550.

The previous prime is 45615541. The next prime is 45615569. The reversal of 45615551 is 15551654.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45615551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45615541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22807775 + 22807776.

It is an arithmetic number, because the mean of its divisors is an integer number (22807776).

Almost surely, 2^45615551 is an apocalyptic number.

45615551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45615551 is an equidigital number, since it uses as much as digits as its factorization.

45615551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15000, while the sum is 32.

The square root of 45615551 is about 6753.9285604750. The cubic root of 45615551 is about 357.3038054988.

The spelling of 45615551 in words is "forty-five million, six hundred fifteen thousand, five hundred fifty-one".