55031501 has 8 divisors (see below), whose sum is σ = 64231680. Its totient is φ = 46165968.

The previous prime is 55031477. The next prime is 55031503. The reversal of 55031501 is 10513055.

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 55031501 - 2¹⁰ = 55030477 is a prime.

It is a super-2 number, since 2×55031501² = 6056932204626002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55031503) 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, 83306 + ... + 83963.

It is an arithmetic number, because the mean of its divisors is an integer number (8028960).

Almost surely, 2^55031501 is an apocalyptic number.

It is an amenable number.

55031501 is a deficient number, since it is larger than the sum of its proper divisors (9200179).

55031501 is a wasteful number, since it uses less digits than its factorization.

55031501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167323.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 55031501 is about 7418.3219800707. The cubic root of 55031501 is about 380.3678363438.

Adding to 55031501 its reverse (10513055), we get a palindrome (65544556).

The spelling of 55031501 in words is "fifty-five million, thirty-one thousand, five hundred one".