61535454 has 8 divisors (see below), whose sum is σ = 123070920. Its totient is φ = 20511816.

The previous prime is 61535447. The next prime is 61535479. The reversal of 61535454 is 45453516.

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

61535454 is an admirable number.

It is a super-2 number, since 2×61535454² = 7573224197972232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5127949 + ... + 5127960.

It is an arithmetic number, because the mean of its divisors is an integer number (15383865).

Almost surely, 2^61535454 is an apocalyptic number.

61535454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61535454 is a wasteful number, since it uses less digits than its factorization.

61535454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10255914.

The product of its digits is 36000, while the sum is 33.

The square root of 61535454 is about 7844.4537094689. The cubic root of 61535454 is about 394.7981749489.

The spelling of 61535454 in words is "sixty-one million, five hundred thirty-five thousand, four hundred fifty-four".