55521465 has 32 divisors (see below), whose sum is σ = 92467200. Its totient is φ = 28416960.

The previous prime is 55521463. The next prime is 55521467. The reversal of 55521465 is 56412555.

It is an interprime number because it is at equal distance from previous prime (55521463) and next prime (55521467).

It is not a de Polignac number, because 55521465 - 2¹ = 55521463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55521463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64206 + ... + 65064.

It is an arithmetic number, because the mean of its divisors is an integer number (2889600).

Almost surely, 2^55521465 is an apocalyptic number.

It is an amenable number.

55521465 is a deficient number, since it is larger than the sum of its proper divisors (36945735).

55521465 is a wasteful number, since it uses less digits than its factorization.

55521465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037.

The product of its digits is 30000, while the sum is 33.

The square root of 55521465 is about 7451.2727100811. The cubic root of 55521465 is about 381.4933503259.

The spelling of 55521465 in words is "fifty-five million, five hundred twenty-one thousand, four hundred sixty-five".