1081023551 has 2 divisors, whose sum is σ = 1081023552. Its totient is φ = 1081023550.

The previous prime is 1081023533. The next prime is 1081023553. The reversal of 1081023551 is 1553201801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081023551 - 2¹⁴ = 1081007167 is a prime.

It is a super-2 number, since 2×1081023551² = 2337223835633299202, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1081023553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081023551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081023553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540511775 + 540511776.

It is an arithmetic number, because the mean of its divisors is an integer number (540511776).

Almost surely, 2^1081023551 is an apocalyptic number.

1081023551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081023551 is an equidigital number, since it uses as much as digits as its factorization.

1081023551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1081023551 is about 32878.9225948783. The cubic root of 1081023551 is about 1026.3095855910.

The spelling of 1081023551 in words is "one billion, eighty-one million, twenty-three thousand, five hundred fifty-one".