1361525455 has 4 divisors (see below), whose sum is σ = 1633830552. Its totient is φ = 1089220360.

The previous prime is 1361525447. The next prime is 1361525483. The reversal of 1361525455 is 5545251631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1361525455 - 2³ = 1361525447 is a prime.

It is a super-2 number, since 2×1361525455² = 3707503129225914050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136152541 + ... + 136152550.

It is an arithmetic number, because the mean of its divisors is an integer number (408457638).

Almost surely, 2^1361525455 is an apocalyptic number.

1361525455 is a deficient number, since it is larger than the sum of its proper divisors (272305097).

1361525455 is an equidigital number, since it uses as much as digits as its factorization.

1361525455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272305096.

The product of its digits is 90000, while the sum is 37.

The square root of 1361525455 is about 36898.8543860104. The cubic root of 1361525455 is about 1108.3457367347.

The spelling of 1361525455 in words is "one billion, three hundred sixty-one million, five hundred twenty-five thousand, four hundred fifty-five".