61213534 has 16 divisors (see below), whose sum is σ = 96018048. Its totient is φ = 29213272.

The previous prime is 61213531. The next prime is 61213543. The reversal of 61213534 is 43531216.

It is a junction number, because it is equal to n+sod(n) for n = 61213499 and 61213508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61213531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25869 + ... + 28135.

It is an arithmetic number, because the mean of its divisors is an integer number (6001128).

Almost surely, 2^61213534 is an apocalyptic number.

61213534 is a deficient number, since it is larger than the sum of its proper divisors (34804514).

61213534 is a wasteful number, since it uses less digits than its factorization.

61213534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879.

The product of its digits is 2160, while the sum is 25.

The square root of 61213534 is about 7823.9078471056. The cubic root of 61213534 is about 394.1085145203.

The spelling of 61213534 in words is "sixty-one million, two hundred thirteen thousand, five hundred thirty-four".