61215046 has 8 divisors (see below), whose sum is σ = 92985120. Its totient is φ = 30220008.

The previous prime is 61215043. The next prime is 61215047. The reversal of 61215046 is 64051216.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61215046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61215041) 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, 193561 + ... + 193876.

It is an arithmetic number, because the mean of its divisors is an integer number (11623140).

Almost surely, 2^61215046 is an apocalyptic number.

61215046 is a deficient number, since it is larger than the sum of its proper divisors (31770074).

61215046 is a wasteful number, since it uses less digits than its factorization.

61215046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387518.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61215046 is about 7824.0044734139. The cubic root of 61215046 is about 394.1117593755. Note that the first 3 decimals are identical.

The spelling of 61215046 in words is "sixty-one million, two hundred fifteen thousand, forty-six".