1021623055 has 16 divisors (see below), whose sum is σ = 1248307200. Its totient is φ = 802427680.

The previous prime is 1021623017. The next prime is 1021623061. The reversal of 1021623055 is 5503261201.

It is not a de Polignac number, because 1021623055 - 2¹³ = 1021614863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302466 + ... + 305824.

It is an arithmetic number, because the mean of its divisors is an integer number (78019200).

Almost surely, 2^1021623055 is an apocalyptic number.

1021623055 is a deficient number, since it is larger than the sum of its proper divisors (226684145).

1021623055 is a wasteful number, since it uses less digits than its factorization.

1021623055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1021623055 is about 31962.8386567902. The cubic root of 1021623055 is about 1007.1563494951.

Adding to 1021623055 its reverse (5503261201), we get a palindrome (6524884256).

The spelling of 1021623055 in words is "one billion, twenty-one million, six hundred twenty-three thousand, fifty-five".