61055501 has 16 divisors (see below), whose sum is σ = 69793920. Its totient is φ = 52979520.

The previous prime is 61055497. The next prime is 61055503. The reversal of 61055501 is 10555016.

It is a cyclic number.

It is not a de Polignac number, because 61055501 - 2² = 61055497 is a prime.

It is a super-2 number, since 2×61055501² = 7455548404722002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15911 + ... + 19371.

It is an arithmetic number, because the mean of its divisors is an integer number (4362120).

Almost surely, 2^61055501 is an apocalyptic number.

It is an amenable number.

61055501 is a deficient number, since it is larger than the sum of its proper divisors (8738419).

61055501 is a wasteful number, since it uses less digits than its factorization.

61055501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 61055501 is about 7813.8019555144. The cubic root of 61055501 is about 393.7690698415.

The spelling of 61055501 in words is "sixty-one million, fifty-five thousand, five hundred one".