5261615542 has 4 divisors (see below), whose sum is σ = 7892423316. Its totient is φ = 2630807770.

The previous prime is 5261615501. The next prime is 5261615543. The reversal of 5261615542 is 2455161625.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5261615542² = 55369196223631907528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261615543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315403884 + ... + 1315403887.

It is an arithmetic number, because the mean of its divisors is an integer number (1973105829).

Almost surely, 2^5261615542 is an apocalyptic number.

5261615542 is a deficient number, since it is larger than the sum of its proper divisors (2630807774).

5261615542 is a wasteful number, since it uses less digits than its factorization.

5261615542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630807773.

The product of its digits is 72000, while the sum is 37.

The square root of 5261615542 is about 72536.9942994607. The cubic root of 5261615542 is about 1739.2941539669.

The spelling of 5261615542 in words is "five billion, two hundred sixty-one million, six hundred fifteen thousand, five hundred forty-two".