1455525551 has 4 divisors (see below), whose sum is σ = 1455805632. Its totient is φ = 1455245472.

The previous prime is 1455525527. The next prime is 1455525557. The reversal of 1455525551 is 1555255541.

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

It is a cyclic number.

It is not a de Polignac number, because 1455525551 - 2¹⁰ = 1455524527 is a prime.

It is a super-2 number, since 2×1455525551² = 4237109259227707202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455525557) by changing a digit.

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, 132095 + ... + 142688.

It is an arithmetic number, because the mean of its divisors is an integer number (363951408).

Almost surely, 2^1455525551 is an apocalyptic number.

1455525551 is a deficient number, since it is larger than the sum of its proper divisors (280081).

1455525551 is an equidigital number, since it uses as much as digits as its factorization.

1455525551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280080.

The product of its digits is 125000, while the sum is 38.

The square root of 1455525551 is about 38151.3505789769. The cubic root of 1455525551 is about 1133.2870980465.

The spelling of 1455525551 in words is "one billion, four hundred fifty-five million, five hundred twenty-five thousand, five hundred fifty-one".