61501418 has 16 divisors (see below), whose sum is σ = 100810656. Its totient is φ = 27907440.

The previous prime is 61501417. The next prime is 61501457. The reversal of 61501418 is 81410516.

It is not an unprimeable number, because it can be changed into a prime (61501411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12980 + ... + 17072.

It is an arithmetic number, because the mean of its divisors is an integer number (6300666).

Almost surely, 2^61501418 is an apocalyptic number.

61501418 is a deficient number, since it is larger than the sum of its proper divisors (39309238).

61501418 is a wasteful number, since it uses less digits than its factorization.

61501418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 61501418 is about 7842.2839785358. The cubic root of 61501418 is about 394.7253723176.

The spelling of 61501418 in words is "sixty-one million, five hundred one thousand, four hundred eighteen".