61286534 has 4 divisors (see below), whose sum is σ = 91929804. Its totient is φ = 30643266.

The previous prime is 61286509. The next prime is 61286549. The reversal of 61286534 is 43568216.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 61286494 and 61286503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15321632 + ... + 15321635.

It is an arithmetic number, because the mean of its divisors is an integer number (22982451).

Almost surely, 2^61286534 is an apocalyptic number.

61286534 is a deficient number, since it is larger than the sum of its proper divisors (30643270).

61286534 is a wasteful number, since it uses less digits than its factorization.

61286534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30643269.

The product of its digits is 34560, while the sum is 35.

The square root of 61286534 is about 7828.5716449426. The cubic root of 61286534 is about 394.2651165588.

The spelling of 61286534 in words is "sixty-one million, two hundred eighty-six thousand, five hundred thirty-four".