55972069 has 8 divisors (see below), whose sum is σ = 56989440. Its totient is φ = 54961200.

The previous prime is 55972067. The next prime is 55972073. The reversal of 55972069 is 96027955.

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 55972069 - 2¹ = 55972067 is a prime.

It is a super-2 number, since 2×55972069² = 6265745016281522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55972067) 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, 17787 + ... + 20695.

It is an arithmetic number, because the mean of its divisors is an integer number (7123680).

Almost surely, 2^55972069 is an apocalyptic number.

It is an amenable number.

55972069 is a deficient number, since it is larger than the sum of its proper divisors (1017371).

55972069 is a wasteful number, since it uses less digits than its factorization.

55972069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 55972069 is about 7481.4483223504. The cubic root of 55972069 is about 382.5226187373.

The spelling of 55972069 in words is "fifty-five million, nine hundred seventy-two thousand, sixty-nine".