61012277 has 4 divisors (see below), whose sum is σ = 61922976. Its totient is φ = 60101580.

The previous prime is 61012229. The next prime is 61012319. The reversal of 61012277 is 77221016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61012277 - 2⁶ = 61012213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012877) 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, 455249 + ... + 455382.

It is an arithmetic number, because the mean of its divisors is an integer number (15480744).

Almost surely, 2^61012277 is an apocalyptic number.

61012277 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61012277 is a deficient number, since it is larger than the sum of its proper divisors (910699).

61012277 is an equidigital number, since it uses as much as digits as its factorization.

61012277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910698.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 61012277 is about 7811.0355907524. The cubic root of 61012277 is about 393.6761254873.

The spelling of 61012277 in words is "sixty-one million, twelve thousand, two hundred seventy-seven".