61445958 has 16 divisors (see below), whose sum is σ = 140448000. Its totient is φ = 17555976.

The previous prime is 61445957. The next prime is 61446013. The reversal of 61445958 is 85954416.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1462999 = 61445958 / (6 + 1 + 4 + 4 + 5 + 9 + 5 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61445957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731458 + ... + 731541.

It is an arithmetic number, because the mean of its divisors is an integer number (8778000).

Almost surely, 2^61445958 is an apocalyptic number.

61445958 is an abundant number, since it is smaller than the sum of its proper divisors (79002042).

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

61445958 is a wasteful number, since it uses less digits than its factorization.

61445958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463011.

The product of its digits is 172800, while the sum is 42.

The square root of 61445958 is about 7838.7472213358. The cubic root of 61445958 is about 394.6066864212.

The spelling of 61445958 in words is "sixty-one million, four hundred forty-five thousand, nine hundred fifty-eight".