61405058 has 32 divisors (see below), whose sum is σ = 110279232. Its totient is φ = 25272000.

The previous prime is 61405051. The next prime is 61405063. The reversal of 61405058 is 85050416.

It is a happy number.

It is a super-2 number, since 2×61405058² = 7541162295966728, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61405058.

It is not an unprimeable number, because it can be changed into a prime (61405051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13133 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (3446226).

Almost surely, 2^61405058 is an apocalyptic number.

61405058 is a deficient number, since it is larger than the sum of its proper divisors (48874174).

61405058 is a wasteful number, since it uses less digits than its factorization.

61405058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 61405058 is about 7836.1379518230. The cubic root of 61405058 is about 394.5191135563.

It can be divided in two parts, 6 and 1405058, that multiplied together give a palindrome (8430348).

The spelling of 61405058 in words is "sixty-one million, four hundred five thousand, fifty-eight".