61212263 has 8 divisors (see below), whose sum is σ = 71584128. Its totient is φ = 51247224.

The previous prime is 61212247. The next prime is 61212287. The reversal of 61212263 is 36221216.

61212263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61212263 - 2⁴ = 61212247 is a prime.

It is a super-2 number, since 2×61212263² = 7493882283162338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61212233) 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, 101381 + ... + 101982.

It is an arithmetic number, because the mean of its divisors is an integer number (8948016).

Almost surely, 2^61212263 is an apocalyptic number.

61212263 is a deficient number, since it is larger than the sum of its proper divisors (10371865).

61212263 is a wasteful number, since it uses less digits than its factorization.

61212263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203413.

The product of its digits is 864, while the sum is 23.

The square root of 61212263 is about 7823.8266212896. The cubic root of 61212263 is about 394.1057868261.

Adding to 61212263 its reverse (36221216), we get a palindrome (97433479).

The spelling of 61212263 in words is "sixty-one million, two hundred twelve thousand, two hundred sixty-three".