55757501 has 8 divisors (see below), whose sum is σ = 59340600. Its totient is φ = 52208128.

The previous prime is 55757479. The next prime is 55757503. The reversal of 55757501 is 10575755.

It can be written as a sum of positive squares in 4 ways, for example, as 39677401 + 16080100 = 6299^2 + 4010^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55757501 is a prime.

It is a super-3 number, since 3×55757501³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55757503) 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, 4976 + ... + 11673.

It is an arithmetic number, because the mean of its divisors is an integer number (7417575).

Almost surely, 2^55757501 is an apocalyptic number.

It is an amenable number.

55757501 is a deficient number, since it is larger than the sum of its proper divisors (3583099).

55757501 is a wasteful number, since it uses less digits than its factorization.

55757501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16863.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 55757501 is about 7467.0945487519. The cubic root of 55757501 is about 382.0331947616.

The spelling of 55757501 in words is "fifty-five million, seven hundred fifty-seven thousand, five hundred one".