61461554 has 16 divisors (see below), whose sum is σ = 114941376. Its totient is φ = 23946000.

The previous prime is 61461541. The next prime is 61461559. The reversal of 61461554 is 45516416.

61461554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61461554.

It is not an unprimeable number, because it can be changed into a prime (61461559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199397 + ... + 199704.

It is an arithmetic number, because the mean of its divisors is an integer number (7183836).

Almost surely, 2^61461554 is an apocalyptic number.

61461554 is a deficient number, since it is larger than the sum of its proper divisors (53479822).

61461554 is a wasteful number, since it uses less digits than its factorization.

61461554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399121.

The product of its digits is 14400, while the sum is 32.

The square root of 61461554 is about 7839.7419600392. The cubic root of 61461554 is about 394.6400694972.

The spelling of 61461554 in words is "sixty-one million, four hundred sixty-one thousand, five hundred fifty-four".