5420156621 has 8 divisors (see below), whose sum is σ = 5913476064. Its totient is φ = 4926933520.

The previous prime is 5420156611. The next prime is 5420156639. The reversal of 5420156621 is 1266510245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5420156621 - 2²² = 5415962317 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 (5420156611) 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 7 ways as a sum of consecutive naturals, for example, 145511 + ... + 178923.

It is an arithmetic number, because the mean of its divisors is an integer number (739184508).

Almost surely, 2^5420156621 is an apocalyptic number.

It is an amenable number.

5420156621 is a deficient number, since it is larger than the sum of its proper divisors (493319443).

5420156621 is a wasteful number, since it uses less digits than its factorization.

5420156621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48171.

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

The square root of 5420156621 is about 73621.7129724649. The cubic root of 5420156621 is about 1756.5908331453.

Adding to 5420156621 its reverse (1266510245), we get a palindrome (6686666866).

The spelling of 5420156621 in words is "five billion, four hundred twenty million, one hundred fifty-six thousand, six hundred twenty-one".