1021452255 has 32 divisors (see below), whose sum is σ = 1911494400. Its totient is φ = 516100896.

The previous prime is 1021452253. The next prime is 1021452277. The reversal of 1021452255 is 5522541201.

It is not a de Polignac number, because 1021452255 - 2¹ = 1021452253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021452253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196549 + ... + 201678.

It is an arithmetic number, because the mean of its divisors is an integer number (59734200).

Almost surely, 2^1021452255 is an apocalyptic number.

1021452255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021452255 is a deficient number, since it is larger than the sum of its proper divisors (890042145).

1021452255 is a wasteful number, since it uses less digits than its factorization.

1021452255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398260 (or 398254 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1021452255 is about 31960.1666923062. The cubic root of 1021452255 is about 1007.1002192387.

Adding to 1021452255 its reverse (5522541201), we get a palindrome (6543993456).

The spelling of 1021452255 in words is "one billion, twenty-one million, four hundred fifty-two thousand, two hundred fifty-five".