61995454 has 8 divisors (see below), whose sum is σ = 93089448. Its totient is φ = 30965640.

The previous prime is 61995421. The next prime is 61995457. The reversal of 61995454 is 45459916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61995454² = 7686872633332232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61995454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61995457) 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, 13552 + ... + 17539.

It is an arithmetic number, because the mean of its divisors is an integer number (11636181).

Almost surely, 2^61995454 is an apocalyptic number.

61995454 is a deficient number, since it is larger than the sum of its proper divisors (31093994).

61995454 is a wasteful number, since it uses less digits than its factorization.

61995454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32090.

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

The square root of 61995454 is about 7873.7191974314. The cubic root of 61995454 is about 395.7794873040.

The spelling of 61995454 in words is "sixty-one million, nine hundred ninety-five thousand, four hundred fifty-four".