1055213453 has 4 divisors (see below), whose sum is σ = 1205958240. Its totient is φ = 904468668.

The previous prime is 1055213387. The next prime is 1055213461. The reversal of 1055213453 is 3543125501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3543125501 = 31 ⋅114294371.

It is a cyclic number.

It is not a de Polignac number, because 1055213453 - 2¹⁰ = 1055212429 is a prime.

It is a super-2 number, since 2×1055213453² = 2226950862784366418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055213483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75372383 + ... + 75372396.

It is an arithmetic number, because the mean of its divisors is an integer number (301489560).

Almost surely, 2^1055213453 is an apocalyptic number.

It is an amenable number.

1055213453 is a deficient number, since it is larger than the sum of its proper divisors (150744787).

1055213453 is an equidigital number, since it uses as much as digits as its factorization.

1055213453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150744786.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1055213453 is about 32484.0492088040. The cubic root of 1055213453 is about 1018.0757817892.

Adding to 1055213453 its reverse (3543125501), we get a palindrome (4598338954).

The spelling of 1055213453 in words is "one billion, fifty-five million, two hundred thirteen thousand, four hundred fifty-three".