63156461 has 8 divisors (see below), whose sum is σ = 66231480. Its totient is φ = 60141312.

The previous prime is 63156451. The next prime is 63156473. The reversal of 63156461 is 16465136.

It can be written as a sum of positive squares in 4 ways, for example, as 9647236 + 53509225 = 3106^2 + 7315^2 .

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 63156461 - 2¹⁸ = 62894317 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 (63156451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12800 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (8278935).

Almost surely, 2^63156461 is an apocalyptic number.

It is an amenable number.

63156461 is a deficient number, since it is larger than the sum of its proper divisors (3075019).

63156461 is a wasteful number, since it uses less digits than its factorization.

63156461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29935.

The product of its digits is 12960, while the sum is 32.

The square root of 63156461 is about 7947.1039379135. The cubic root of 63156461 is about 398.2348491474.

The spelling of 63156461 in words is "sixty-three million, one hundred fifty-six thousand, four hundred sixty-one".