63156361 has 4 divisors (see below), whose sum is σ = 66480400. Its totient is φ = 59832324.

The previous prime is 63156319. The next prime is 63156371. The reversal of 63156361 is 16365136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63156361 - 2¹⁷ = 63025289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63156311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661991 + ... + 1662028.

It is an arithmetic number, because the mean of its divisors is an integer number (16620100).

Almost surely, 2^63156361 is an apocalyptic number.

It is an amenable number.

63156361 is a deficient number, since it is larger than the sum of its proper divisors (3324039).

63156361 is a wasteful number, since it uses less digits than its factorization.

63156361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324038.

The product of its digits is 9720, while the sum is 31.

The square root of 63156361 is about 7947.0976463109. The cubic root of 63156361 is about 398.2346389630.

The spelling of 63156361 in words is "sixty-three million, one hundred fifty-six thousand, three hundred sixty-one".