45131551 has 2 divisors, whose sum is σ = 45131552. Its totient is φ = 45131550.

The previous prime is 45131539. The next prime is 45131563. The reversal of 45131551 is 15513154.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (45131539) and next prime (45131563).

It is a cyclic number.

It is not a de Polignac number, because 45131551 - 2¹⁹ = 44607263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45131531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22565775 + 22565776.

It is an arithmetic number, because the mean of its divisors is an integer number (22565776).

Almost surely, 2^45131551 is an apocalyptic number.

45131551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45131551 is an equidigital number, since it uses as much as digits as its factorization.

45131551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 25.

The square root of 45131551 is about 6718.0020095263. The cubic root of 45131551 is about 356.0355953761.

The spelling of 45131551 in words is "forty-five million, one hundred thirty-one thousand, five hundred fifty-one".