1145547541 has 2 divisors, whose sum is σ = 1145547542. Its totient is φ = 1145547540.

The previous prime is 1145547467. The next prime is 1145547577. The reversal of 1145547541 is 1457455411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016270641 + 129276900 = 31879^2 + 11370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145547541 is a prime.

It is a super-2 number, since 2×1145547541² = 2624558337382293362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145547541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145547841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572773770 + 572773771.

It is an arithmetic number, because the mean of its divisors is an integer number (572773771).

Almost surely, 2^1145547541 is an apocalyptic number.

It is an amenable number.

1145547541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145547541 is an equidigital number, since it uses as much as digits as its factorization.

1145547541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 37.

The square root of 1145547541 is about 33845.9383235271. The cubic root of 1145547541 is about 1046.3356899841.

It can be divided in two parts, 11455 and 47541, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 1145547541 in words is "one billion, one hundred forty-five million, five hundred forty-seven thousand, five hundred forty-one".