1420061553 has 6 divisors (see below), whose sum is σ = 2051200034. Its totient is φ = 946707696.

The previous prime is 1420061551. The next prime is 1420061579. The reversal of 1420061553 is 3551600241.

1420061553 is a `hidden beast` number, since 1 + 42 + 0 + 0 + 615 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 965220624 + 454840929 = 31068^2 + 21327^2 .

It is not a de Polignac number, because 1420061553 - 2¹ = 1420061551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420061551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78892300 + ... + 78892317.

Almost surely, 2^1420061553 is an apocalyptic number.

It is an amenable number.

1420061553 is a deficient number, since it is larger than the sum of its proper divisors (631138481).

1420061553 is a wasteful number, since it uses less digits than its factorization.

1420061553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157784623 (or 157784620 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1420061553 is about 37683.7040774922. The cubic root of 1420061553 is about 1124.0071049922.

Adding to 1420061553 its reverse (3551600241), we get a palindrome (4971661794).

The spelling of 1420061553 in words is "one billion, four hundred twenty million, sixty-one thousand, five hundred fifty-three".