1020355 has 8 divisors (see below), whose sum is σ = 1399392. Its totient is φ = 699648.

The previous prime is 1020353. The next prime is 1020361. The reversal of 1020355 is 5530201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020355 - 2¹ = 1020353 is a prime.

It is a super-2 number, since 2×1020355² = 2082248652050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14542 + ... + 14611.

It is an arithmetic number, because the mean of its divisors is an integer number (174924).

2^1020355 is an apocalyptic number.

1020355 is a deficient number, since it is larger than the sum of its proper divisors (379037).

1020355 is an equidigital number, since it uses as much as digits as its factorization.

1020355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29165.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1020355 is about 1010.1262297357. The cubic root of 1020355 is about 100.6739477407.

Adding to 1020355 its reverse (5530201), we get a palindrome (6550556).

It can be divided in two parts, 10203 and 55, that multiplied together give a palindrome (561165).

The spelling of 1020355 in words is "one million, twenty thousand, three hundred fifty-five".