15448457 has 2 divisors, whose sum is σ = 15448458. Its totient is φ = 15448456.

The previous prime is 15448453. The next prime is 15448471. The reversal of 15448457 is 75484451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14258176 + 1190281 = 3776^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 15448457 - 2² = 15448453 is a prime.

It is equal to p₉₉₇₇₃₃ and since 15448457 and 997733 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15448457.

It is not a weakly prime, because it can be changed into another prime (15448453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7724228 + 7724229.

It is an arithmetic number, because the mean of its divisors is an integer number (7724229).

Almost surely, 2^15448457 is an apocalyptic number.

It is an amenable number.

15448457 is a deficient number, since it is larger than the sum of its proper divisors (1).

15448457 is an equidigital number, since it uses as much as digits as its factorization.

15448457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 38.

The square root of 15448457 is about 3930.4525184767. The cubic root of 15448457 is about 249.0548687437.

It can be divided in two parts, 1544 and 8457, that added together give a palindrome (10001).

The spelling of 15448457 in words is "fifteen million, four hundred forty-eight thousand, four hundred fifty-seven".