61215254 has 8 divisors (see below), whose sum is σ = 92165040. Its totient is φ = 30493576.

The previous prime is 61215251. The next prime is 61215257. The reversal of 61215254 is 45251216.

It is an interprime number because it is at equal distance from previous prime (61215251) and next prime (61215257).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61215251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56354 + ... + 57429.

It is an arithmetic number, because the mean of its divisors is an integer number (11520630).

Almost surely, 2^61215254 is an apocalyptic number.

61215254 is a deficient number, since it is larger than the sum of its proper divisors (30949786).

61215254 is a wasteful number, since it uses less digits than its factorization.

61215254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114054.

The product of its digits is 2400, while the sum is 26.

The square root of 61215254 is about 7824.0177658285. The cubic root of 61215254 is about 394.1122057535.

The spelling of 61215254 in words is "sixty-one million, two hundred fifteen thousand, two hundred fifty-four".