53491550 has 24 divisors (see below), whose sum is σ = 113708496. Its totient is φ = 18339840.

The previous prime is 53491541. The next prime is 53491561. The reversal of 53491550 is 5519435.

It is a super-2 number, since 2×53491550² = 5722691842805000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76067 + ... + 76766.

It is an arithmetic number, because the mean of its divisors is an integer number (4737854).

Almost surely, 2^53491550 is an apocalyptic number.

53491550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53491550 is an abundant number, since it is smaller than the sum of its proper divisors (60216946).

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

53491550 is a wasteful number, since it uses less digits than its factorization.

53491550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152852 (or 152847 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 53491550 is about 7313.7917662455. The cubic root of 53491550 is about 376.7862630468.

The spelling of 53491550 in words is "fifty-three million, four hundred ninety-one thousand, five hundred fifty".