1355504424251 has 2 divisors, whose sum is σ = 1355504424252. Its totient is φ = 1355504424250.

The previous prime is 1355504424193. The next prime is 1355504424271. The reversal of 1355504424251 is 1524244055531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1355504424251 - 2²² = 1355500229947 is a prime.

It is a super-2 number, since 2×1355504424251² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1355504424199 and 1355504424208.

It is not a weakly prime, because it can be changed into another prime (1355504424271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677752212125 + 677752212126.

It is an arithmetic number, because the mean of its divisors is an integer number (677752212126).

Almost surely, 2^{1355504424251} is an apocalyptic number.

1355504424251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355504424251 is an equidigital number, since it uses as much as digits as its factorization.

1355504424251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 1355504424251 its reverse (1524244055531), we get a palindrome (2879748479782).

The spelling of 1355504424251 in words is "one trillion, three hundred fifty-five billion, five hundred four million, four hundred twenty-four thousand, two hundred fifty-one".