61077297 has 4 divisors (see below), whose sum is σ = 81436400. Its totient is φ = 40718196.

The previous prime is 61077283. The next prime is 61077319. The reversal of 61077297 is 79277016.

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 not a de Polignac number, because 61077297 - 2⁴ = 61077281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61077227) 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, 10179547 + ... + 10179552.

It is an arithmetic number, because the mean of its divisors is an integer number (20359100).

Almost surely, 2^61077297 is an apocalyptic number.

It is an amenable number.

61077297 is a deficient number, since it is larger than the sum of its proper divisors (20359103).

61077297 is a wasteful number, since it uses less digits than its factorization.

61077297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20359102.

The product of its (nonzero) digits is 37044, while the sum is 39.

The square root of 61077297 is about 7815.1965426341. The cubic root of 61077297 is about 393.8159210366.

The spelling of 61077297 in words is "sixty-one million, seventy-seven thousand, two hundred ninety-seven".