1420523553 has 16 divisors (see below), whose sum is σ = 2013266880. Its totient is φ = 887832576.

The previous prime is 1420523537. The next prime is 1420523557. The reversal of 1420523553 is 3553250241.

It is not a de Polignac number, because 1420523553 - 2⁴ = 1420523537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420523553.

It is not an unprimeable number, because it can be changed into a prime (1420523557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41083 + ... + 67296.

It is an arithmetic number, because the mean of its divisors is an integer number (125829180).

Almost surely, 2^1420523553 is an apocalyptic number.

It is an amenable number.

1420523553 is a deficient number, since it is larger than the sum of its proper divisors (592743327).

1420523553 is a wasteful number, since it uses less digits than its factorization.

1420523553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108656.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1420523553 is about 37689.8335496457. The cubic root of 1420523553 is about 1124.1289858540.

Adding to 1420523553 its reverse (3553250241), we get a palindrome (4973773794).

The spelling of 1420523553 in words is "one billion, four hundred twenty million, five hundred twenty-three thousand, five hundred fifty-three".