15453481 has 2 divisors, whose sum is σ = 15453482. Its totient is φ = 15453480.

The previous prime is 15453461. The next prime is 15453499. The reversal of 15453481 is 18435451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15139881 + 313600 = 3891^2 + 560^2 .

It is an emirp because it is prime and its reverse (18435451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15453481 - 2¹³ = 15445289 is a prime.

It is a super-2 number, since 2×15453481² = 477620150034722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15453461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7726740 + 7726741.

It is an arithmetic number, because the mean of its divisors is an integer number (7726741).

Almost surely, 2^15453481 is an apocalyptic number.

It is an amenable number.

15453481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15453481 is an equidigital number, since it uses as much as digits as its factorization.

15453481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 15453481 is about 3931.0915786840. The cubic root of 15453481 is about 249.0818642347.

It can be divided in two parts, 154 and 53481, that added together give a palindrome (53635).

The spelling of 15453481 in words is "fifteen million, four hundred fifty-three thousand, four hundred eighty-one".