1013455551 has 4 divisors (see below), whose sum is σ = 1351274072. Its totient is φ = 675637032.

The previous prime is 1013455543. The next prime is 1013455571. The reversal of 1013455551 is 1555543101.

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

It is not a de Polignac number, because 1013455551 - 2³ = 1013455543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013455511) 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, 168909256 + ... + 168909261.

It is an arithmetic number, because the mean of its divisors is an integer number (337818518).

Almost surely, 2^1013455551 is an apocalyptic number.

1013455551 is a deficient number, since it is larger than the sum of its proper divisors (337818521).

1013455551 is an equidigital number, since it uses as much as digits as its factorization.

1013455551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337818520.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1013455551 is about 31834.8166478150. The cubic root of 1013455551 is about 1004.4652158381.

Adding to 1013455551 its reverse (1555543101), we get a palindrome (2568998652).

The spelling of 1013455551 in words is "one billion, thirteen million, four hundred fifty-five thousand, five hundred fifty-one".