61755457 has 8 divisors (see below), whose sum is σ = 62318592. Its totient is φ = 61195200.

The previous prime is 61755433. The next prime is 61755461. The reversal of 61755457 is 75455716.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61755457 - 2⁷ = 61755329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61755427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69657 + ... + 70537.

It is an arithmetic number, because the mean of its divisors is an integer number (7789824).

Almost surely, 2^61755457 is an apocalyptic number.

It is an amenable number.

61755457 is a deficient number, since it is larger than the sum of its proper divisors (563135).

61755457 is a wasteful number, since it uses less digits than its factorization.

61755457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439.

The product of its digits is 147000, while the sum is 40.

The square root of 61755457 is about 7858.4640356752. The cubic root of 61755457 is about 395.2681125840.

The spelling of 61755457 in words is "sixty-one million, seven hundred fifty-five thousand, four hundred fifty-seven".