1021553023 has 2 divisors, whose sum is σ = 1021553024. Its totient is φ = 1021553022.

The previous prime is 1021552937. The next prime is 1021553047. The reversal of 1021553023 is 3203551201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021553023 - 2¹³ = 1021544831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021552985 and 1021553003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021553083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510776511 + 510776512.

It is an arithmetic number, because the mean of its divisors is an integer number (510776512).

Almost surely, 2^1021553023 is an apocalyptic number.

1021553023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021553023 is an equidigital number, since it uses as much as digits as its factorization.

1021553023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1021553023 is about 31961.7431157939. The cubic root of 1021553023 is about 1007.1333355322.

The spelling of 1021553023 in words is "one billion, twenty-one million, five hundred fifty-three thousand, twenty-three".