1355251020 has 48 divisors (see below), whose sum is σ = 3833839968. Its totient is φ = 357672960.

The previous prime is 1355251003. The next prime is 1355251021. The reversal of 1355251020 is 201525531.

It is a happy number.

It is a super-2 number, since 2×1355251020² = 3673410654422080800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1355251021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110611 + ... + 122250.

It is an arithmetic number, because the mean of its divisors is an integer number (79871666).

Almost surely, 2^1355251020 is an apocalyptic number.

1355251020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355251020 is an abundant number, since it is smaller than the sum of its proper divisors (2478588948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355251020 is a wasteful number, since it uses less digits than its factorization.

1355251020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232970 (or 232968 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1355251020 is about 36813.7341219279. The cubic root of 1355251020 is about 1106.6405529636.

Adding to 1355251020 its reverse (201525531), we get a palindrome (1556776551).

The spelling of 1355251020 in words is "one billion, three hundred fifty-five million, two hundred fifty-one thousand, twenty".