61445995 has 24 divisors (see below), whose sum is σ = 83056176. Its totient is φ = 43378368.

The previous prime is 61445957. The next prime is 61446013. The reversal of 61445995 is 59954416.

It is not a de Polignac number, because 61445995 - 2¹⁵ = 61413227 is a prime.

It is a super-2 number, since 2×61445995² = 7551220603080050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33492 + ... + 35278.

It is an arithmetic number, because the mean of its divisors is an integer number (3460674).

Almost surely, 2^61445995 is an apocalyptic number.

61445995 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61445995 is a deficient number, since it is larger than the sum of its proper divisors (21610181).

61445995 is a wasteful number, since it uses less digits than its factorization.

61445995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1828 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 61445995 is about 7838.7495814065. The cubic root of 61445995 is about 394.6067656260.

The spelling of 61445995 in words is "sixty-one million, four hundred forty-five thousand, nine hundred ninety-five".