1455455620 has 24 divisors (see below), whose sum is σ = 3057665688. Its totient is φ = 581952000.

The previous prime is 1455455593. The next prime is 1455455621. The reversal of 1455455620 is 265545541.

It can be written as a sum of positive squares in 4 ways, for example, as 166358404 + 1289097216 = 12898^2 + 35904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1455455620.

It is not an unprimeable number, because it can be changed into a prime (1455455621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43030 + ... + 69010.

It is an arithmetic number, because the mean of its divisors is an integer number (127402737).

Almost surely, 2^1455455620 is an apocalyptic number.

1455455620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455455620 is an abundant number, since it is smaller than the sum of its proper divisors (1602210068).

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

1455455620 is a wasteful number, since it uses less digits than its factorization.

1455455620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28791 (or 28789 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The square root of 1455455620 is about 38150.4340735463. The cubic root of 1455455620 is about 1133.2689480916.

The spelling of 1455455620 in words is "one billion, four hundred fifty-five million, four hundred fifty-five thousand, six hundred twenty".