1315545454 has 4 divisors (see below), whose sum is σ = 1973318184. Its totient is φ = 657772726.

The previous prime is 1315545449. The next prime is 1315545499. The reversal of 1315545454 is 4545455131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4545455131 = 7 ⋅649350733.

It is a super-2 number, since 2×1315545454² = 3461319683080132232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328886362 + ... + 328886365.

It is an arithmetic number, because the mean of its divisors is an integer number (493329546).

Almost surely, 2^1315545454 is an apocalyptic number.

1315545454 is a deficient number, since it is larger than the sum of its proper divisors (657772730).

1315545454 is an equidigital number, since it uses as much as digits as its factorization.

1315545454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657772729.

The product of its digits is 120000, while the sum is 37.

The square root of 1315545454 is about 36270.4487703144. The cubic root of 1315545454 is about 1095.7259641080.

The spelling of 1315545454 in words is "one billion, three hundred fifteen million, five hundred forty-five thousand, four hundred fifty-four".