55057662 has 72 divisors (see below), whose sum is σ = 138928608. Its totient is φ = 15692160.

The previous prime is 55057661. The next prime is 55057663. The reversal of 55057662 is 26675055.

It is an interprime number because it is at equal distance from previous prime (55057661) and next prime (55057663).

It is a super-2 number, since 2×55057662² = 6062692289812488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55057661) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36283 + ... + 37769.

It is an arithmetic number, because the mean of its divisors is an integer number (1929564).

Almost surely, 2^55057662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55057662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69464304).

55057662 is an abundant number, since it is smaller than the sum of its proper divisors (83870946).

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

55057662 is a wasteful number, since it uses less digits than its factorization.

55057662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 55057662 is about 7420.0850399439. The cubic root of 55057662 is about 380.4281001709.

The spelling of 55057662 in words is "fifty-five million, fifty-seven thousand, six hundred sixty-two".