61219255 has 8 divisors (see below), whose sum is σ = 73569600. Its totient is φ = 48904416.

The previous prime is 61219243. The next prime is 61219259. The reversal of 61219255 is 55291216.

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 61219255 - 2¹³ = 61211063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61219259) 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, 4920 + ... + 12109.

It is an arithmetic number, because the mean of its divisors is an integer number (9196200).

Almost surely, 2^61219255 is an apocalyptic number.

61219255 is a deficient number, since it is larger than the sum of its proper divisors (12350345).

61219255 is a wasteful number, since it uses less digits than its factorization.

61219255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17753.

The product of its digits is 5400, while the sum is 31.

The square root of 61219255 is about 7824.2734486980. The cubic root of 61219255 is about 394.1207918955.

It can be divided in two parts, 6121 and 9255, that added together give a square (15376 = 124²).

The spelling of 61219255 in words is "sixty-one million, two hundred nineteen thousand, two hundred fifty-five".