61770523 has 4 divisors (see below), whose sum is σ = 61818400. Its totient is φ = 61722648.

The previous prime is 61770487. The next prime is 61770529. The reversal of 61770523 is 32507716.

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 61770523 - 2²¹ = 59673371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61770529) 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, 21948 + ... + 24601.

It is an arithmetic number, because the mean of its divisors is an integer number (15454600).

Almost surely, 2^61770523 is an apocalyptic number.

61770523 is a deficient number, since it is larger than the sum of its proper divisors (47877).

61770523 is a wasteful number, since it uses less digits than its factorization.

61770523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47876.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 61770523 is about 7859.4225614863. The cubic root of 61770523 is about 395.3002534693.

The spelling of 61770523 in words is "sixty-one million, seven hundred seventy thousand, five hundred twenty-three".