55520454 has 16 divisors (see below), whose sum is σ = 121135680. Its totient is φ = 16824360.

The previous prime is 55520441. The next prime is 55520467. The reversal of 55520454 is 45402555.

It is an interprime number because it is at equal distance from previous prime (55520441) and next prime (55520467).

It is a super-2 number, since 2×55520454² = 6165041624732232, 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 7 ways as a sum of consecutive naturals, for example, 420544 + ... + 420675.

It is an arithmetic number, because the mean of its divisors is an integer number (7570980).

Almost surely, 2^55520454 is an apocalyptic number.

55520454 is an abundant number, since it is smaller than the sum of its proper divisors (65615226).

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

55520454 is a wasteful number, since it uses less digits than its factorization.

55520454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841235.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55520454 is about 7451.2048690128. The cubic root of 55520454 is about 381.4910347522.

The spelling of 55520454 in words is "fifty-five million, five hundred twenty thousand, four hundred fifty-four".