143553061 has 4 divisors (see below), whose sum is σ = 145695712. Its totient is φ = 141410412.

The previous prime is 143553043. The next prime is 143553073. The reversal of 143553061 is 160355341.

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.

It is a cyclic number.

It is not a de Polignac number, because 143553061 - 2⁵ = 143553029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143553041) 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, 1071225 + ... + 1071358.

It is an arithmetic number, because the mean of its divisors is an integer number (36423928).

Almost surely, 2^143553061 is an apocalyptic number.

It is an amenable number.

143553061 is a deficient number, since it is larger than the sum of its proper divisors (2142651).

143553061 is an equidigital number, since it uses as much as digits as its factorization.

143553061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142650.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 143553061 is about 11981.3630693674. The cubic root of 143553061 is about 523.6054429860.

The spelling of 143553061 in words is "one hundred forty-three million, five hundred fifty-three thousand, sixty-one".