61011534 has 32 divisors (see below), whose sum is σ = 130314240. Its totient is φ = 19000800.

The previous prime is 61011523. The next prime is 61011541. The reversal of 61011534 is 43511016.

It is a self number, because there is not a number n which added to its sum of digits gives 61011534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262 + ... + 11049.

It is an arithmetic number, because the mean of its divisors is an integer number (4072320).

Almost surely, 2^61011534 is an apocalyptic number.

61011534 is an abundant number, since it is smaller than the sum of its proper divisors (69302706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61011534 is a wasteful number, since it uses less digits than its factorization.

61011534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11376.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 61011534 is about 7810.9880296925. The cubic root of 61011534 is about 393.6745274343.

The spelling of 61011534 in words is "sixty-one million, eleven thousand, five hundred thirty-four".