1533400705 has 4 divisors (see below), whose sum is σ = 1840080852. Its totient is φ = 1226720560.

The previous prime is 1533400699. The next prime is 1533400711. The reversal of 1533400705 is 5070043351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5070043351 = 131 ⋅38702621.

It is an interprime number because it is at equal distance from previous prime (1533400699) and next prime (1533400711).

It can be written as a sum of positive squares in 2 ways, for example, as 438651136 + 1094749569 = 20944^2 + 33087^2 .

It is not a de Polignac number, because 1533400705 - 2⁷ = 1533400577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153340066 + ... + 153340075.

It is an arithmetic number, because the mean of its divisors is an integer number (460020213).

Almost surely, 2^1533400705 is an apocalyptic number.

It is an amenable number.

1533400705 is a deficient number, since it is larger than the sum of its proper divisors (306680147).

1533400705 is an equidigital number, since it uses as much as digits as its factorization.

1533400705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306680146.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 1533400705 is about 39158.6606640217. The cubic root of 1533400705 is about 1153.1484498674.

The spelling of 1533400705 in words is "one billion, five hundred thirty-three million, four hundred thousand, seven hundred five".