1554513241 has 2 divisors, whose sum is σ = 1554513242. Its totient is φ = 1554513240.

The previous prime is 1554513239. The next prime is 1554513281. The reversal of 1554513241 is 1423154551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1551966025 + 2547216 = 39395^2 + 1596^2 .

It is a cyclic number.

It is not a de Polignac number, because 1554513241 - 2¹ = 1554513239 is a prime.

It is a super-2 number, since 2×1554513241² = 4833022832888648162, which contains 22 as substring.

Together with 1554513239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1554513211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777256620 + 777256621.

It is an arithmetic number, because the mean of its divisors is an integer number (777256621).

Almost surely, 2^1554513241 is an apocalyptic number.

It is an amenable number.

1554513241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554513241 is an equidigital number, since it uses as much as digits as its factorization.

1554513241 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 1554513241 is about 39427.3159243690. The cubic root of 1554513241 is about 1158.4166966739.

Adding to 1554513241 its reverse (1423154551), we get a palindrome (2977667792).

The spelling of 1554513241 in words is "one billion, five hundred fifty-four million, five hundred thirteen thousand, two hundred forty-one".