55420155031 has 8 divisors (see below), whose sum is σ = 56447509104. Its totient is φ = 54398688960.

The previous prime is 55420154963. The next prime is 55420155071. The reversal of 55420155031 is 13055102455.

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 55420155031 - 2¹⁷ = 55420023959 is a prime.

It is a super-2 number, since 2×55420155031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55420154984 and 55420155002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55420155071) 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, 1453000 + ... + 1490653.

It is an arithmetic number, because the mean of its divisors is an integer number (7055938638).

Almost surely, 2^55420155031 is an apocalyptic number.

55420155031 is a deficient number, since it is larger than the sum of its proper divisors (1027354073).

55420155031 is a wasteful number, since it uses less digits than its factorization.

55420155031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944001.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 55420155031 its reverse (13055102455), we get a palindrome (68475257486).

The spelling of 55420155031 in words is "fifty-five billion, four hundred twenty million, one hundred fifty-five thousand, thirty-one".