61001955 has 48 divisors (see below), whose sum is σ = 124760064. Its totient is φ = 26982720.

The previous prime is 61001953. The next prime is 61001971. The reversal of 61001955 is 55910016.

61001955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61001955 - 2¹ = 61001953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61001953) 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 47 ways as a sum of consecutive naturals, for example, 6642 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (2599168).

Almost surely, 2^61001955 is an apocalyptic number.

61001955 is an abundant number, since it is smaller than the sum of its proper divisors (63758109).

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

61001955 is a wasteful number, since it uses less digits than its factorization.

61001955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6293 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 61001955 is about 7810.3748309540. The cubic root of 61001955 is about 393.6539236489.

The spelling of 61001955 in words is "sixty-one million, one thousand, nine hundred fifty-five".