1001553450 has 48 divisors (see below), whose sum is σ = 2486436096. Its totient is φ = 266803200.

The previous prime is 1001553439. The next prime is 1001553451. The reversal of 1001553450 is 543551001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001553450.

It is not an unprimeable number, because it can be changed into a prime (1001553451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170055 + ... + 175845.

It is an arithmetic number, because the mean of its divisors is an integer number (51800752).

Almost surely, 2^1001553450 is an apocalyptic number.

1001553450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001553450 is an abundant number, since it is smaller than the sum of its proper divisors (1484882646).

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

1001553450 is a wasteful number, since it uses less digits than its factorization.

1001553450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959 (or 6954 counting only the distinct ones).

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

The square root of 1001553450 is about 31647.3292712039. The cubic root of 1001553450 is about 1000.5175487637.

The spelling of 1001553450 in words is "one billion, one million, five hundred fifty-three thousand, four hundred fifty".