61006259 has 4 divisors (see below), whose sum is σ = 61131000. Its totient is φ = 60881520.

The previous prime is 61006223. The next prime is 61006271. The reversal of 61006259 is 95260016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61006259 - 2¹² = 61002163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61006289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61634 + ... + 62615.

It is an arithmetic number, because the mean of its divisors is an integer number (15282750).

Almost surely, 2^61006259 is an apocalyptic number.

61006259 is a deficient number, since it is larger than the sum of its proper divisors (124741).

61006259 is a wasteful number, since it uses less digits than its factorization.

61006259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124740.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61006259 is about 7810.6503570445. The cubic root of 61006259 is about 393.6631815306.

The spelling of 61006259 in words is "sixty-one million, six thousand, two hundred fifty-nine".