5420261561 has 16 divisors (see below), whose sum is σ = 6414363648. Its totient is φ = 4515254400.

The previous prime is 5420261527. The next prime is 5420261579. The reversal of 5420261561 is 1651620245.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5420261561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5420261761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118745 + ... + 157926.

It is an arithmetic number, because the mean of its divisors is an integer number (400897728).

Almost surely, 2^5420261561 is an apocalyptic number.

It is an amenable number.

5420261561 is a deficient number, since it is larger than the sum of its proper divisors (994102087).

5420261561 is a wasteful number, since it uses less digits than its factorization.

5420261561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276832.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 5420261561 is about 73622.4256663688. The cubic root of 5420261561 is about 1756.6021695614.

The spelling of 5420261561 in words is "five billion, four hundred twenty million, two hundred sixty-one thousand, five hundred sixty-one".