1541523541 has 2 divisors, whose sum is σ = 1541523542. Its totient is φ = 1541523540.

The previous prime is 1541523517. The next prime is 1541523547. The reversal of 1541523541 is 1453251451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1540955025 + 568516 = 39255^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1541523541 - 2¹⁹ = 1540999253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1541523547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770761770 + 770761771.

It is an arithmetic number, because the mean of its divisors is an integer number (770761771).

Almost surely, 2^1541523541 is an apocalyptic number.

It is an amenable number.

1541523541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541523541 is an equidigital number, since it uses as much as digits as its factorization.

1541523541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 31.

The square root of 1541523541 is about 39262.2406518018. The cubic root of 1541523541 is about 1155.1810441888.

Adding to 1541523541 its reverse (1453251451), we get a palindrome (2994774992).

The spelling of 1541523541 in words is "one billion, five hundred forty-one million, five hundred twenty-three thousand, five hundred forty-one".