61012554 has 8 divisors (see below), whose sum is σ = 122025120. Its totient is φ = 20337516.

The previous prime is 61012547. The next prime is 61012559. The reversal of 61012554 is 45521016.

It is a sphenic number, since it is the product of 3 distinct primes.

61012554 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61012559) 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, 5084374 + ... + 5084385.

It is an arithmetic number, because the mean of its divisors is an integer number (15253140).

Almost surely, 2^61012554 is an apocalyptic number.

61012554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61012554 is a wasteful number, since it uses less digits than its factorization.

61012554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168764.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 61012554 is about 7811.0533220559. The cubic root of 61012554 is about 393.6767212588.

The spelling of 61012554 in words is "sixty-one million, twelve thousand, five hundred fifty-four".