61355004 has 12 divisors (see below), whose sum is σ = 143161704. Its totient is φ = 20451664.

The previous prime is 61355003. The next prime is 61355051. The reversal of 61355004 is 40055316.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61355003) 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, 2556447 + ... + 2556470.

It is an arithmetic number, because the mean of its divisors is an integer number (11930142).

Almost surely, 2^61355004 is an apocalyptic number.

It is an amenable number.

61355004 is an abundant number, since it is smaller than the sum of its proper divisors (81806700).

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

61355004 is a wasteful number, since it uses less digits than its factorization.

61355004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112924 (or 5112922 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 61355004 is about 7832.9435080307. The cubic root of 61355004 is about 394.4118877109.

The spelling of 61355004 in words is "sixty-one million, three hundred fifty-five thousand, four".