61225577 has 8 divisors (see below), whose sum is σ = 70056192. Its totient is φ = 52416000.

The previous prime is 61225561. The next prime is 61225597. The reversal of 61225577 is 77552216.

It is a happy number.

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

It is not a de Polignac number, because 61225577 - 2⁴ = 61225561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61225597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (8757024).

Almost surely, 2^61225577 is an apocalyptic number.

It is an amenable number.

61225577 is a deficient number, since it is larger than the sum of its proper divisors (8830615).

61225577 is an equidigital number, since it uses as much as digits as its factorization.

61225577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10519.

The product of its digits is 29400, while the sum is 35.

The square root of 61225577 is about 7824.6774374411. The cubic root of 61225577 is about 394.1343581385.

The spelling of 61225577 in words is "sixty-one million, two hundred twenty-five thousand, five hundred seventy-seven".