61456523 has 4 divisors (see below), whose sum is σ = 61483848. Its totient is φ = 61429200.

The previous prime is 61456511. The next prime is 61456531. The reversal of 61456523 is 32565416.

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 61456523 - 2⁶ = 61456459 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61456523.

It is not an unprimeable number, because it can be changed into a prime (61456543) 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, 9953 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (15370962).

Almost surely, 2^61456523 is an apocalyptic number.

61456523 is a deficient number, since it is larger than the sum of its proper divisors (27325).

61456523 is a wasteful number, since it uses less digits than its factorization.

61456523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27324.

The product of its digits is 21600, while the sum is 32.

The square root of 61456523 is about 7839.4210883202. The cubic root of 61456523 is about 394.6293013111.

The spelling of 61456523 in words is "sixty-one million, four hundred fifty-six thousand, five hundred twenty-three".