1351555531 has 2 divisors, whose sum is σ = 1351555532. Its totient is φ = 1351555530.

The previous prime is 1351555459. The next prime is 1351555561. The reversal of 1351555531 is 1355551531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351555531 - 2¹³ = 1351547339 is a prime.

It is a super-2 number, since 2×1351555531² = 3653404706753383922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1351555561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675777765 + 675777766.

It is an arithmetic number, because the mean of its divisors is an integer number (675777766).

Almost surely, 2^1351555531 is an apocalyptic number.

1351555531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351555531 is an equidigital number, since it uses as much as digits as its factorization.

1351555531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28125, while the sum is 34.

The square root of 1351555531 is about 36763.5081432662. The cubic root of 1351555531 is about 1105.6337774129.

The spelling of 1351555531 in words is "one billion, three hundred fifty-one million, five hundred fifty-five thousand, five hundred thirty-one".